<?xml version='1.0' encoding='UTF-8'?><?xml-stylesheet href="http://www.blogger.com/styles/atom.css" type="text/css"?><feed xmlns='http://www.w3.org/2005/Atom' xmlns:openSearch='http://a9.com/-/spec/opensearchrss/1.0/' xmlns:blogger='http://schemas.google.com/blogger/2008' xmlns:georss='http://www.georss.org/georss' xmlns:gd="http://schemas.google.com/g/2005" xmlns:thr='http://purl.org/syndication/thread/1.0'><id>tag:blogger.com,1999:blog-8805233244562884169</id><updated>2024-10-04T19:01:23.632-07:00</updated><category term="Engenharia de Software"/><category term="Segurança da Informação"/><category term="Governança de TI"/><category term="Redes de Computadores"/><category term="Fundamentos de Computação"/><title type='text'>Charles Miranda</title><subtitle type='html'>Blog pessoal sobre Computação</subtitle><link rel='http://schemas.google.com/g/2005#feed' type='application/atom+xml' href='http://charles-miranda.blogspot.com/feeds/posts/default'/><link rel='self' type='application/atom+xml' href='http://www.blogger.com/feeds/8805233244562884169/posts/default?redirect=false'/><link rel='alternate' type='text/html' href='http://charles-miranda.blogspot.com/'/><link rel='hub' href='http://pubsubhubbub.appspot.com/'/><author><name>Charles Miranda</name><uri>http://www.blogger.com/profile/03547869376935064170</uri><email>noreply@blogger.com</email><gd:image rel='http://schemas.google.com/g/2005#thumbnail' width='32' height='26' src='//blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjCSpDLcGXHXwkMSEwiixZKX45eVnJ-pDgmRrp8p59MmEBKElP3mimLz-4QiAJOcT4NHdYCpF798rUQ2Z_VY_BUwfqaVzUgbQWQ1Z8x4Qo_0z-6Yitht6N6Bfk6qsAGsw/s220/imagem.JPG'/></author><generator version='7.00' uri='http://www.blogger.com'>Blogger</generator><openSearch:totalResults>12</openSearch:totalResults><openSearch:startIndex>1</openSearch:startIndex><openSearch:itemsPerPage>25</openSearch:itemsPerPage><entry><id>tag:blogger.com,1999:blog-8805233244562884169.post-4411041952113230413</id><published>2010-04-17T06:30:00.000-07:00</published><updated>2010-04-18T09:09:36.954-07:00</updated><category scheme="http://www.blogger.com/atom/ns#" term="Engenharia de Software"/><title type='text'>Questões TRE-BA 2010 - Teste de Software - CESPE</title><content type='html'>&lt;span style=&quot;font-family: Arial,Helvetica,sans-serif; font-size: small;&quot;&gt;&lt;/span&gt;&lt;br /&gt;
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&lt;/span&gt;&lt;/div&gt;&lt;div style=&quot;font-family: Arial,Helvetica,sans-serif; text-align: justify;&quot;&gt;&lt;span style=&quot;font-size: small;&quot;&gt;&lt;b&gt;&amp;nbsp;76&amp;nbsp; - Resposta: Correta&lt;/b&gt;&lt;/span&gt;&lt;/div&gt;&lt;div style=&quot;font-family: Arial,Helvetica,sans-serif; text-align: justify;&quot;&gt;&lt;span style=&quot;font-size: small;&quot;&gt;&lt;b&gt;&amp;nbsp; &amp;nbsp; &amp;nbsp; &amp;nbsp; Teste de regressão&lt;/b&gt;, segundo Pressman, é a reexecução de um subconjunto de testes&lt;b&gt; &lt;/b&gt;que já foi conduzido para garantir que as modificações não propagassem efeitos colaterais indesejáveis. O teste de regressão ajuda a garantir que o sistema não &lt;b&gt;regrida, &lt;/b&gt;ou seja, que modificações não introduzam comportamento indesejável ou erros adicionais.&lt;/span&gt;&lt;/div&gt;&lt;div style=&quot;font-family: Arial,Helvetica,sans-serif; text-align: justify;&quot;&gt;&lt;span style=&quot;font-size: small;&quot;&gt;&lt;br /&gt;
&lt;/span&gt;&lt;/div&gt;&lt;div style=&quot;font-family: Arial,Helvetica,sans-serif; text-align: justify;&quot;&gt;&lt;span style=&quot;font-size: small;&quot;&gt;&lt;b&gt;77 - Resposta: Errada&lt;/b&gt;&lt;/span&gt;&lt;/div&gt;&lt;div style=&quot;font-family: Arial,Helvetica,sans-serif; text-align: justify;&quot;&gt;&lt;span style=&quot;font-size: small;&quot;&gt;&lt;b&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;/b&gt;O teste de unidade se concentra nas unidades fundamentais do software em construção. Focaliza o esforço de verificação na menor unidade de projeto de software. Enfoca a lógica interna de processamento e as estruturas de dados dentro dos limites de um componente.&lt;/span&gt;&lt;/div&gt;&lt;div style=&quot;font-family: Arial,Helvetica,sans-serif; text-align: justify;&quot;&gt;&lt;span style=&quot;font-size: small;&quot;&gt;&amp;nbsp;&amp;nbsp; A questão faz uma mistura de &lt;b&gt;teste de recuperação&lt;/b&gt; (O sistema é forçado a falhar de diversos modos), &lt;b&gt;teste de validação &lt;/b&gt;(verificar se os requisitos foram adequadamente implementados), e &lt;b&gt;teste de unidade&lt;/b&gt; (identificar erros relacionados a algoritmos incorretos).&lt;/span&gt;&lt;/div&gt;&lt;div style=&quot;font-family: Arial,Helvetica,sans-serif; text-align: justify;&quot;&gt;&lt;span style=&quot;font-size: small;&quot;&gt;&lt;br /&gt;
&lt;/span&gt;&lt;/div&gt;&lt;div style=&quot;font-family: Arial,Helvetica,sans-serif; text-align: justify;&quot;&gt;&lt;span style=&quot;font-size: small;&quot;&gt;&amp;nbsp;&amp;nbsp; Ouro erro da questão é afirmar que as unidades são testadas &lt;b&gt;duas a duas. &lt;/b&gt;No teste convencional de unidade, cada unidade é testada individualmente, enquanto no teste de unidades orientado a objetos as unidades são testadas levando-se em consideração, além do funcionamento interno, o contexto em que são inseridas.&lt;/span&gt;&lt;/div&gt;&lt;div style=&quot;font-family: Arial,Helvetica,sans-serif; text-align: justify;&quot;&gt;&lt;span style=&quot;font-size: small;&quot;&gt;&lt;b&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&lt;/b&gt;&lt;/span&gt;&lt;/div&gt;&lt;div style=&quot;font-family: Arial,Helvetica,sans-serif; text-align: justify;&quot;&gt;&lt;span style=&quot;font-size: small;&quot;&gt;&lt;b&gt;78 - Resposta: Errada&lt;/b&gt;&lt;/span&gt;&lt;/div&gt;&lt;div style=&quot;font-family: Arial,Helvetica,sans-serif; text-align: justify;&quot;&gt;&lt;span style=&quot;font-size: small;&quot;&gt;&lt;b&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;/b&gt;A questão descreve teste de unidade.&lt;/span&gt;&lt;/div&gt;&lt;div style=&quot;font-family: Arial,Helvetica,sans-serif; text-align: justify;&quot;&gt;&lt;span style=&quot;font-size: small;&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; Teste de integração é efetuado no nível de projeto, e não no nível de unidade individual. &quot;Teste de integração é uma técnica sistemática para construir arquiteturas do software enquanto, ao mesmo tempo conduz testes para descobrir erros associados às interfaces. O objetivo é,&amp;nbsp; a partir de componentes testados no nível de unidade, construir uma estrutura de programa determinada pelo projeto (Pressman)&quot;.&lt;/span&gt;&lt;/div&gt;&lt;div style=&quot;font-family: Arial,Helvetica,sans-serif; text-align: justify;&quot;&gt;&lt;span style=&quot;font-size: small;&quot;&gt;&lt;br /&gt;
&lt;/span&gt;&lt;/div&gt;&lt;div style=&quot;font-family: Arial,Helvetica,sans-serif; text-align: justify;&quot;&gt;&lt;span style=&quot;font-size: small;&quot;&gt;&lt;b&gt;79 - Resposta: Correta&lt;/b&gt;&lt;/span&gt;&lt;/div&gt;&lt;div style=&quot;font-family: Arial,Helvetica,sans-serif; text-align: justify;&quot;&gt;&lt;span style=&quot;font-size: small;&quot;&gt;&lt;b&gt;&amp;nbsp;&amp;nbsp; Teste funcional, &lt;/b&gt;ou&lt;b&gt; teste comportamental&lt;/b&gt; é efetuado objetivando a verificação dos requisitos funcionais do software. A atenção é direcionada ao domínio da informação, e não à estrutura de controle interna dos componentes.&lt;/span&gt;&lt;/div&gt;&lt;div style=&quot;font-family: Arial,Helvetica,sans-serif; text-align: justify;&quot;&gt;&lt;span style=&quot;font-size: small;&quot;&gt;&lt;br /&gt;
&lt;/span&gt;&lt;/div&gt;&lt;div style=&quot;font-family: Arial,Helvetica,sans-serif; text-align: justify;&quot;&gt;&lt;span style=&quot;font-size: small;&quot;&gt;&lt;b&gt;80 - Resposta: Errada:&lt;/b&gt;&lt;/span&gt;&lt;/div&gt;&lt;div style=&quot;font-family: Arial,Helvetica,sans-serif; text-align: justify;&quot;&gt;&lt;span style=&quot;font-size: small;&quot;&gt;&lt;br /&gt;
&lt;/span&gt;&lt;/div&gt;&lt;div style=&quot;font-family: Arial,Helvetica,sans-serif; text-align: justify;&quot;&gt;&lt;span style=&quot;font-size: small;&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp; A imagem abaixo mostra a organização de classes do &lt;i&gt;framework JUnit&lt;/i&gt;:&lt;/span&gt;&lt;/div&gt;&lt;div style=&quot;font-family: Arial,Helvetica,sans-serif; text-align: justify;&quot;&gt;&lt;span style=&quot;font-size: small;&quot;&gt;&lt;br /&gt;
&lt;/span&gt;&lt;/div&gt;&lt;div class=&quot;separator&quot; style=&quot;clear: both; font-family: Arial,Helvetica,sans-serif; text-align: justify;&quot;&gt;&lt;span style=&quot;font-size: small;&quot;&gt;&lt;a href=&quot;http://1.bp.blogspot.com/_RFt9qXsT53g/S8sMg4VIinI/AAAAAAAAALg/VwQ94vJ4umM/s1600/gunit.bmp&quot; imageanchor=&quot;1&quot; style=&quot;margin-left: 1em; margin-right: 1em;&quot;&gt;&lt;img border=&quot;0&quot; height=&quot;364&quot; src=&quot;http://1.bp.blogspot.com/_RFt9qXsT53g/S8sMg4VIinI/AAAAAAAAALg/VwQ94vJ4umM/s640/gunit.bmp&quot; width=&quot;640&quot; /&gt;&lt;/a&gt;&lt;/span&gt;&lt;/div&gt;&lt;div style=&quot;font-family: Arial,Helvetica,sans-serif; text-align: justify;&quot;&gt;&lt;span style=&quot;font-size: small;&quot;&gt;&lt;br /&gt;
&lt;/span&gt;&lt;/div&gt;&lt;div style=&quot;font-family: Arial,Helvetica,sans-serif; text-align: justify;&quot;&gt;&lt;span style=&quot;font-size: small;&quot;&gt;&lt;br /&gt;
&lt;/span&gt;&lt;/div&gt;&lt;div style=&quot;font-family: Arial,Helvetica,sans-serif; text-align: justify;&quot;&gt;&lt;span style=&quot;font-size: small;&quot;&gt;&lt;o:p&gt;&lt;/o:p&gt;Quanto à questão, todos os casos de teste &lt;b&gt;devem &lt;/b&gt;herdar as características da classe &lt;b&gt;TesteCase &lt;/b&gt;e o método setUP() é chamado &lt;b&gt;antes &lt;/b&gt;de cada método de teste.&lt;/span&gt;&lt;/div&gt;&lt;div style=&quot;font-family: Arial,Helvetica,sans-serif; text-align: justify;&quot;&gt;&lt;span style=&quot;font-size: small;&quot;&gt;&lt;br /&gt;
&lt;/span&gt;&lt;/div&gt;&lt;div style=&quot;font-family: Arial,Helvetica,sans-serif; text-align: justify;&quot;&gt;&lt;span style=&quot;font-size: small;&quot;&gt;Referências: Engenharia de Software - Pressman&lt;/span&gt;&lt;/div&gt;&lt;div style=&quot;font-family: Arial,Helvetica,sans-serif; text-align: justify;&quot;&gt;&lt;span style=&quot;font-size: small;&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; e&amp;nbsp;&lt;a href=&quot;http://www.javafree.org/dependencias/tutoriais/testes_junit.pdf&quot; style=&quot;color: black;&quot;&gt;JUnit Tutorial.&lt;/a&gt;&lt;/span&gt;&lt;br /&gt;
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style=&quot;clear: both; font-family: Arial,Helvetica,sans-serif; text-align: justify;&quot;&gt;&lt;img border=&quot;0&quot; height=&quot;400&quot; src=&quot;http://2.bp.blogspot.com/_RFt9qXsT53g/S8dr0ldWAXI/AAAAAAAAAKw/QNYMbL7Y1Ak/s400/nova.bmp&quot; width=&quot;395&quot; /&gt;&lt;/div&gt;&lt;div class=&quot;separator&quot; style=&quot;clear: both; font-family: Arial,Helvetica,sans-serif; text-align: justify;&quot;&gt;&lt;br /&gt;
&lt;/div&gt;&lt;div class=&quot;separator&quot; style=&quot;clear: both; font-family: Arial,Helvetica,sans-serif; text-align: justify;&quot;&gt;&amp;nbsp;&lt;b&gt;Resposta : Correta&lt;/b&gt;&lt;/div&gt;&lt;div class=&quot;separator&quot; style=&quot;clear: both; font-family: Arial,Helvetica,sans-serif; text-align: justify;&quot;&gt;&lt;br /&gt;
&lt;/div&gt;&lt;div class=&quot;separator&quot; style=&quot;clear: both; font-family: Arial,Helvetica,sans-serif; text-align: justify;&quot;&gt;&amp;nbsp;&amp;nbsp; Observar as características do sistema a ser constuído:&lt;/div&gt;&lt;ul style=&quot;font-family: Arial,Helvetica,sans-serif; text-align: justify;&quot;&gt;&lt;li&gt; Sistema seguro baseado em &lt;b&gt;cifragem simétrica&lt;/b&gt; e &lt;b&gt;esteganografia&lt;/b&gt;;&lt;/li&gt;
&lt;li&gt;Troca de mensagens de pequeno tamanho;&lt;/li&gt;
&lt;li&gt;Troca de um pequeno número de menságens;&lt;/li&gt;
&lt;li&gt;&lt;b&gt;Absoluta confidencialidade &lt;/b&gt;no teor das mensagens, em detrimento de integridade e disponibilidade;&lt;/li&gt;
&lt;li&gt;Envolve geração de números aleatórios;&lt;/li&gt;
&lt;li&gt;Implementação simples;&lt;/li&gt;
&lt;/ul&gt;&lt;div style=&quot;font-family: Arial,Helvetica,sans-serif; text-align: justify;&quot;&gt;&amp;nbsp;&amp;nbsp; As implicações acima podem ser bem atendidas através do uso da técnica &lt;i&gt;one-time-pad&lt;/i&gt;&amp;nbsp; ou &lt;b&gt;cifra de uso único. &lt;/b&gt;&lt;/div&gt;&lt;div style=&quot;font-family: Arial,Helvetica,sans-serif; text-align: justify;&quot;&gt;&amp;nbsp;&amp;nbsp; Como foi descrito na resolução &lt;a href=&quot;http://charles-miranda.blogspot.com/2010/04/questao-perito-criminal-federal.html&quot;&gt;de outra questão relacionada ao mesmo tema&lt;/a&gt;, a cifra de uso único permite uma implementação de segurança praticamente inviolável. O texto simples a ser encriptado é convertido em uma string de bits. Uma chave de &lt;b&gt;bits aleatórios&lt;/b&gt; (com o mesmo número de bits do texto simples) é gerada.&lt;/div&gt;&lt;div style=&quot;font-family: Arial,Helvetica,sans-serif; text-align: justify;&quot;&gt;A encriptação é feita através do cálculo do OR exclusivo das duas strings.Uma vatagem desta técnica é a facilidade de camuflar a chave dentro de um CD ou DVD, ou em arquivos de imagens, etc. (&lt;b&gt;esteganografia&lt;/b&gt;).&lt;/div&gt;&lt;div style=&quot;font-family: Arial,Helvetica,sans-serif; text-align: justify;&quot;&gt;&lt;br /&gt;
&lt;/div&gt;&lt;div style=&quot;font-family: Arial,Helvetica,sans-serif; text-align: justify;&quot;&gt;&amp;nbsp;&amp;nbsp; A questão descreve, alguns motivos pelos quais o uso desta técnica não é tão difundido atualmente, ou seja:&lt;/div&gt;&lt;ul style=&quot;font-family: Arial,Helvetica,sans-serif; text-align: justify;&quot;&gt;&lt;li&gt;&amp;nbsp;Como o tamanho da chave deve ser o mesmo da string a ser encriptada, esta limita o tamanho daquela, fazendo com que a técnica seja viável apenas para a transmissão de pequenas mensagens;&lt;/li&gt;
&lt;li&gt;A chave dificilmente poderá ser memorizada, fazendo com que seja, algumas vezes, necessário que a chave seja passada pessoalmente do emissor para o receptor das mensagens. Isto&amp;nbsp; limita consideravelmente a quantidade de mensagens que podem ser transmitidas;&lt;/li&gt;
&lt;li&gt;A integridade das mensagens será comprometida sempre que houver uma falta de sincronismo entre o emissor e o receptor; &lt;/li&gt;
&lt;/ul&gt;&lt;div style=&quot;font-family: Arial,Helvetica,sans-serif; text-align: justify;&quot;&gt;&amp;nbsp;&amp;nbsp; A implementação desta técnica é relativamente simples (apenas uma operação XOR).&lt;/div&gt;&lt;div style=&quot;font-family: Arial,Helvetica,sans-serif; text-align: justify;&quot;&gt;Um outro fator para que se elimine o uso do algoritmo DES para a implementação em questão está relacionado ao fato de este não ofertar muita segurança.&amp;nbsp;&lt;/div&gt;&lt;div style=&quot;font-family: Arial,Helvetica,sans-serif; text-align: justify;&quot;&gt;&amp;nbsp;&amp;nbsp; Uma breve descrição do DES pode ser vista &lt;a href=&quot;http://charles-miranda.blogspot.com/2010/04/questao-perito-criminal-federal_11.html&quot;&gt;aqui.&lt;/a&gt;&lt;/div&gt;&lt;div style=&quot;font-family: Arial,Helvetica,sans-serif; text-align: justify;&quot;&gt;&lt;/div&gt;&lt;div style=&quot;font-family: Arial,Helvetica,sans-serif; text-align: justify;&quot;&gt;&lt;br /&gt;
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&lt;/div&gt;</content><link rel='replies' type='application/atom+xml' href='http://charles-miranda.blogspot.com/feeds/206502135270270604/comments/default' title='Postar comentários'/><link rel='replies' type='text/html' href='http://charles-miranda.blogspot.com/2010/04/questao-tcu-criptografia-cespe.html#comment-form' title='1 Comentários'/><link rel='edit' type='application/atom+xml' href='http://www.blogger.com/feeds/8805233244562884169/posts/default/206502135270270604'/><link rel='self' type='application/atom+xml' href='http://www.blogger.com/feeds/8805233244562884169/posts/default/206502135270270604'/><link rel='alternate' type='text/html' href='http://charles-miranda.blogspot.com/2010/04/questao-tcu-criptografia-cespe.html' title='Questão TCU - Criptografia (CESPE)'/><author><name>Charles Miranda</name><uri>http://www.blogger.com/profile/03547869376935064170</uri><email>noreply@blogger.com</email><gd:image rel='http://schemas.google.com/g/2005#thumbnail' width='32' height='26' src='//blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjCSpDLcGXHXwkMSEwiixZKX45eVnJ-pDgmRrp8p59MmEBKElP3mimLz-4QiAJOcT4NHdYCpF798rUQ2Z_VY_BUwfqaVzUgbQWQ1Z8x4Qo_0z-6Yitht6N6Bfk6qsAGsw/s220/imagem.JPG'/></author><media:thumbnail xmlns:media="http://search.yahoo.com/mrss/" url="http://2.bp.blogspot.com/_RFt9qXsT53g/S8dr0ldWAXI/AAAAAAAAAKw/QNYMbL7Y1Ak/s72-c/nova.bmp" height="72" width="72"/><thr:total>1</thr:total></entry><entry><id>tag:blogger.com,1999:blog-8805233244562884169.post-8350207641828527070</id><published>2010-04-15T07:25:00.000-07:00</published><updated>2010-04-15T07:41:48.283-07:00</updated><category scheme="http://www.blogger.com/atom/ns#" term="Redes de Computadores"/><title type='text'>Questões TRE-RS - Protocolo IP (CESPE)</title><content type='html'>&lt;div class=&quot;separator&quot; style=&quot;clear: both; text-align: center;&quot;&gt;&lt;a href=&quot;http://4.bp.blogspot.com/_RFt9qXsT53g/S8YHgJd_nUI/AAAAAAAAAKo/VW18zGiTnnQ/s1600/IP.bmp&quot; imageanchor=&quot;1&quot; style=&quot;margin-left: 1em; margin-right: 1em;&quot;&gt;&lt;img border=&quot;0&quot; height=&quot;241&quot; src=&quot;http://4.bp.blogspot.com/_RFt9qXsT53g/S8YHgJd_nUI/AAAAAAAAAKo/VW18zGiTnnQ/s400/IP.bmp&quot; width=&quot;400&quot; /&gt;&lt;/a&gt;&lt;/div&gt;&lt;div style=&quot;text-align: justify;&quot;&gt;&lt;br /&gt;
&lt;/div&gt;&lt;div style=&quot;text-align: justify;&quot;&gt;&lt;b&gt;&lt;br /&gt;
&lt;/b&gt;&lt;/div&gt;&lt;div style=&quot;text-align: justify;&quot;&gt;&lt;b&gt;97 - Resposta: Correta&lt;/b&gt;&lt;/div&gt;&lt;div style=&quot;text-align: justify;&quot;&gt;&lt;br /&gt;
&lt;/div&gt;&lt;div style=&quot;text-align: justify;&quot;&gt;O campo opções ( &lt;i&gt;options &lt;/i&gt;) do protocolo IP possui um limite de quatro bytes.&lt;/div&gt;&lt;div style=&quot;text-align: justify;&quot;&gt;Originalmente as opções definidas para o campo eram:&lt;/div&gt;&lt;ul style=&quot;text-align: justify;&quot;&gt;&lt;li&gt;&lt;i&gt;Security: &lt;/i&gt;Especifica o nível de segurança do datagrama&lt;/li&gt;
&lt;li&gt;&lt;b&gt;&lt;i&gt;Strict source routing&lt;/i&gt;: Mostra o caminho completo, da origem até o destino, a ser seguido. O datagrama é obrigado a seguir exatamente a rota especificada.&lt;/b&gt;&lt;/li&gt;
&lt;li&gt;&lt;i&gt;Loose source routing&lt;/i&gt;: Apresenta uma lista de roteadores que não devem ser esquecidos. Esta opção exige que o datagrama passe por uma lista de roteadores especificados.&lt;/li&gt;
&lt;li&gt;&lt;i&gt;Record rout&lt;/i&gt;: Faz com que os roteadores pelos quais o datagrama passa anexem o seu endereço IP.&lt;/li&gt;
&lt;li&gt;&lt;i&gt;Timestamp&lt;/i&gt;: Faz com que os roteadores pelos quais o datagrama passa anexem seu endereço IP e um timbre de hora de 32 bits.&lt;/li&gt;
&lt;/ul&gt;&lt;div style=&quot;text-align: justify;&quot;&gt;Hoje, algumas das opções que compõem esta lista são:&lt;/div&gt;&lt;ul style=&quot;text-align: justify;&quot;&gt;&lt;li&gt;&amp;nbsp;&lt;i&gt;End of Options List    &lt;/i&gt;&lt;/li&gt;
&lt;/ul&gt;&lt;ul style=&quot;text-align: justify;&quot;&gt;&lt;li&gt;&lt;i&gt; No Operation           &lt;/i&gt;&lt;/li&gt;
&lt;/ul&gt;&lt;ul style=&quot;text-align: justify;&quot;&gt;&lt;li&gt;&lt;i&gt; Security                 &lt;/i&gt;&lt;/li&gt;
&lt;/ul&gt;&lt;ul style=&quot;text-align: justify;&quot;&gt;&lt;li&gt;&lt;i&gt; Loose Source Route     &lt;/i&gt;&lt;/li&gt;
&lt;/ul&gt;&lt;ul style=&quot;text-align: justify;&quot;&gt;&lt;li&gt;&lt;i&gt; Time Stamp            &lt;/i&gt;&lt;/li&gt;
&lt;/ul&gt;&lt;ul style=&quot;text-align: justify;&quot;&gt;&lt;li&gt;&lt;i&gt; Extended Security         &lt;/i&gt;&lt;/li&gt;
&lt;/ul&gt;&lt;ul style=&quot;text-align: justify;&quot;&gt;&lt;li&gt;&lt;i&gt; Commercial Security           &lt;/i&gt;&lt;/li&gt;
&lt;/ul&gt;&lt;ul style=&quot;text-align: justify;&quot;&gt;&lt;li&gt;&lt;i&gt; Record Route           &lt;/i&gt;&lt;/li&gt;
&lt;/ul&gt;&lt;ul style=&quot;text-align: justify;&quot;&gt;&lt;li&gt;&lt;i&gt; Stream ID             &lt;/i&gt;&lt;/li&gt;
&lt;/ul&gt;&lt;ul style=&quot;text-align: justify;&quot;&gt;&lt;li&gt;&lt;i&gt; Strict Source Route    &lt;/i&gt;&lt;/li&gt;
&lt;/ul&gt;&lt;ul style=&quot;text-align: justify;&quot;&gt;&lt;li&gt;&lt;i&gt; Experimental Measurement     &lt;/i&gt;&lt;/li&gt;
&lt;/ul&gt;&lt;ul style=&quot;text-align: justify;&quot;&gt;&lt;li&gt;&lt;i&gt; MTU Probe                &lt;/i&gt;&lt;/li&gt;
&lt;/ul&gt;&lt;ul style=&quot;text-align: justify;&quot;&gt;&lt;li&gt;&lt;i&gt; MTU Reply          &lt;/i&gt;&lt;/li&gt;
&lt;/ul&gt;&lt;ul style=&quot;text-align: justify;&quot;&gt;&lt;li&gt;&lt;i&gt; Experimental Flow Control    &lt;/i&gt;&lt;/li&gt;
&lt;/ul&gt;&lt;ul style=&quot;text-align: justify;&quot;&gt;&lt;li&gt; &lt;br /&gt;
&lt;pre&gt;&lt;i&gt;&lt;span style=&quot;font-family: inherit;&quot;&gt;Expermental Access Control  &lt;/span&gt;          &lt;/i&gt;&lt;/pre&gt;&lt;/li&gt;
&lt;/ul&gt;&lt;div style=&quot;text-align: justify;&quot;&gt;&lt;b&gt;98 - Resposta: Correta&lt;/b&gt;&lt;/div&gt;&lt;div style=&quot;text-align: justify;&quot;&gt;&lt;br /&gt;
&lt;/div&gt;&lt;div style=&quot;text-align: justify;&quot;&gt;&lt;b&gt;IP &lt;/b&gt;versão 4 ou &lt;b&gt;IPv4 &lt;/b&gt;refere-se ao atual padrão para representação de endereços IP. No IPv4&amp;nbsp; um endereço IP é dividido em 4 blocos de 8 bits. totalizando 32 bits.&lt;/div&gt;&lt;div style=&quot;text-align: justify;&quot;&gt;&lt;br /&gt;
&lt;/div&gt;&lt;div style=&quot;text-align: justify;&quot;&gt;&lt;b&gt;99 - Resposta: Errada&lt;/b&gt;&lt;/div&gt;&lt;div style=&quot;text-align: justify;&quot;&gt;A faixa de IPs 127.x.x.x é reservada, mas para testes de loopback, ou seja, o emissor de uma determinada mensagem também é o receptor da mesma. Pacotes enviados para esse endereço não são transmitidos, mas processados localmente como pacote de entrada.&lt;/div&gt;&lt;div style=&quot;text-align: justify;&quot;&gt;&lt;b&gt;100 - Resposta: Correta&lt;/b&gt;&lt;/div&gt;&lt;div style=&quot;text-align: justify;&quot;&gt;&lt;br /&gt;
&lt;/div&gt;&lt;div style=&quot;text-align: justify;&quot;&gt;Todos os endereços iniciados com 11110 fazem parte da faixa de endereços de &lt;b&gt;classe E&lt;/b&gt;, ou seja, a faixa compreendida entre 240 .0.0.0 a 247.255.255.255. Esta faixa é reservada para uso futuro.&lt;/div&gt;&lt;div style=&quot;text-align: justify;&quot;&gt;&lt;br /&gt;
&lt;/div&gt;&lt;div style=&quot;text-align: justify;&quot;&gt;&lt;br /&gt;
&lt;b&gt;Observar:&lt;/b&gt; 240 em binário é equivalente a &lt;b&gt;11110&lt;/b&gt;000 e&amp;nbsp;&lt;/div&gt;&lt;div style=&quot;text-align: justify;&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; 247 em binário é equivalente a &lt;b&gt;11110&lt;/b&gt;111&lt;/div&gt;&lt;div style=&quot;text-align: justify;&quot;&gt;&lt;br /&gt;
&lt;/div&gt;&lt;div style=&quot;text-align: justify;&quot;&gt;Daí o elaborador da questão ter colocado os primeiros 5 bits (11110) como os iniciais para a faixa de endereços reservados para uso futuro.&lt;/div&gt;&lt;div style=&quot;text-align: justify;&quot;&gt;&lt;/div&gt;&lt;div style=&quot;text-align: justify;&quot;&gt;&lt;b&gt;Observar também que&lt;/b&gt;: A próxima faixa iniciaria com 248, que é equivalente a &lt;b&gt;11111&lt;/b&gt;000. &lt;/div&gt;&lt;div style=&quot;text-align: justify;&quot;&gt;&lt;br /&gt;
&lt;/div&gt;</content><link rel='replies' type='application/atom+xml' href='http://charles-miranda.blogspot.com/feeds/8350207641828527070/comments/default' title='Postar comentários'/><link rel='replies' type='text/html' href='http://charles-miranda.blogspot.com/2010/04/questoes-tre-rs-protocolo-ip-cespe.html#comment-form' title='0 Comentários'/><link rel='edit' type='application/atom+xml' href='http://www.blogger.com/feeds/8805233244562884169/posts/default/8350207641828527070'/><link rel='self' type='application/atom+xml' href='http://www.blogger.com/feeds/8805233244562884169/posts/default/8350207641828527070'/><link rel='alternate' type='text/html' href='http://charles-miranda.blogspot.com/2010/04/questoes-tre-rs-protocolo-ip-cespe.html' title='Questões TRE-RS - Protocolo IP (CESPE)'/><author><name>Charles Miranda</name><uri>http://www.blogger.com/profile/03547869376935064170</uri><email>noreply@blogger.com</email><gd:image rel='http://schemas.google.com/g/2005#thumbnail' width='32' height='26' src='//blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjCSpDLcGXHXwkMSEwiixZKX45eVnJ-pDgmRrp8p59MmEBKElP3mimLz-4QiAJOcT4NHdYCpF798rUQ2Z_VY_BUwfqaVzUgbQWQ1Z8x4Qo_0z-6Yitht6N6Bfk6qsAGsw/s220/imagem.JPG'/></author><media:thumbnail xmlns:media="http://search.yahoo.com/mrss/" url="http://4.bp.blogspot.com/_RFt9qXsT53g/S8YHgJd_nUI/AAAAAAAAAKo/VW18zGiTnnQ/s72-c/IP.bmp" height="72" width="72"/><thr:total>0</thr:total></entry><entry><id>tag:blogger.com,1999:blog-8805233244562884169.post-8667162345506482476</id><published>2010-04-13T07:15:00.000-07:00</published><updated>2010-04-13T07:18:51.718-07:00</updated><category scheme="http://www.blogger.com/atom/ns#" term="Governança de TI"/><title type='text'>Questões TCU  - COBIT (CESPE)</title><content type='html'>&lt;div class=&quot;separator&quot; style=&quot;clear: both; text-align: center;&quot;&gt;&lt;a href=&quot;http://2.bp.blogspot.com/_RFt9qXsT53g/S8R1lWv-cpI/AAAAAAAAAKQ/9KqNAdi6QWQ/s1600/imagem.bmp&quot; imageanchor=&quot;1&quot; style=&quot;margin-left: 1em; margin-right: 1em;&quot;&gt;&lt;img border=&quot;0&quot; height=&quot;400&quot; src=&quot;http://2.bp.blogspot.com/_RFt9qXsT53g/S8R1lWv-cpI/AAAAAAAAAKQ/9KqNAdi6QWQ/s400/imagem.bmp&quot; width=&quot;356&quot; /&gt;&lt;/a&gt;&lt;/div&gt;&lt;br /&gt;
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&lt;div class=&quot;MsoNormal&quot; style=&quot;text-align: justify;&quot;&gt;&lt;b&gt;&lt;span style=&quot;font-family: &amp;quot;Times&amp;quot;,&amp;quot;serif&amp;quot;; font-size: 12pt; line-height: 115%;&quot;&gt;192 – Resposta: Errada&lt;/span&gt;&lt;/b&gt;&lt;b&gt;&lt;span style=&quot;font-family: &amp;quot;Times&amp;quot;,&amp;quot;serif&amp;quot;;&quot;&gt;&lt;o:p&gt;&lt;/o:p&gt;&lt;/span&gt;&lt;/b&gt;&lt;/div&gt;&lt;div class=&quot;MsoNormal&quot; style=&quot;text-align: justify;&quot;&gt;&lt;span style=&quot;font-family: &amp;quot;Times&amp;quot;,&amp;quot;serif&amp;quot;; font-size: 12pt; line-height: 115%;&quot;&gt;“Os recursos de TI identificados pelo COBIT são:&lt;/span&gt;&lt;span style=&quot;font-family: &amp;quot;Times&amp;quot;,&amp;quot;serif&amp;quot;;&quot;&gt;&lt;o:p&gt;&lt;/o:p&gt;&lt;/span&gt;&lt;/div&gt;&lt;div class=&quot;MsoNormal&quot; style=&quot;text-align: justify;&quot;&gt;&lt;b&gt;&lt;span style=&quot;font-family: &amp;quot;Times&amp;quot;,&amp;quot;serif&amp;quot;; font-size: 12pt; line-height: 115%;&quot;&gt;Aplicativos&lt;/span&gt;&lt;/b&gt;&lt;span style=&quot;font-family: &amp;quot;Times&amp;quot;,&amp;quot;serif&amp;quot;; font-size: 12pt; line-height: 115%;&quot;&gt;: São os sistemas automatizados para usuários e procedimentos manuais que processam as informações;&lt;/span&gt;&lt;span style=&quot;font-family: &amp;quot;Times&amp;quot;,&amp;quot;serif&amp;quot;;&quot;&gt;&lt;o:p&gt;&lt;/o:p&gt;&lt;/span&gt;&lt;/div&gt;&lt;div class=&quot;MsoNormal&quot; style=&quot;text-align: justify;&quot;&gt;&lt;b&gt;&lt;span style=&quot;font-family: &amp;quot;Times&amp;quot;,&amp;quot;serif&amp;quot;; font-size: 12pt; line-height: 115%;&quot;&gt;Informações&lt;/span&gt;&lt;/b&gt;&lt;span style=&quot;font-family: &amp;quot;Times&amp;quot;,&amp;quot;serif&amp;quot;; font-size: 12pt; line-height: 115%;&quot;&gt;: São os dados em todas as suas formas, o processamento e a saída fornecida pelo Sistema de Informação em qualquer formato a ser utilizado pelo negócio;&lt;/span&gt;&lt;span style=&quot;font-family: &amp;quot;Times&amp;quot;,&amp;quot;serif&amp;quot;;&quot;&gt;&lt;o:p&gt;&lt;/o:p&gt;&lt;/span&gt;&lt;/div&gt;&lt;div class=&quot;MsoNormal&quot; style=&quot;text-align: justify;&quot;&gt;&lt;span style=&quot;font-family: &amp;quot;Times&amp;quot;,&amp;quot;serif&amp;quot;; font-size: 12pt; line-height: 115%;&quot;&gt;&amp;nbsp;&lt;b&gt;Infraestrutura&lt;/b&gt;: Refere-se à tecnologia e aos recursos (hardware, Sistemas Operacionais e Sistemas de Gerenciamento de Bases de Dados, redes, multimídia e os ambientes que abrigam e dão suporte a eles) que possibilitam o processamento dos aplicativos.&lt;/span&gt;&lt;span style=&quot;font-family: &amp;quot;Times&amp;quot;,&amp;quot;serif&amp;quot;;&quot;&gt;&lt;o:p&gt;&lt;/o:p&gt;&lt;/span&gt;&lt;/div&gt;&lt;div class=&quot;MsoNormal&quot; style=&quot;text-align: justify;&quot;&gt;&lt;b&gt;&lt;span style=&quot;font-family: &amp;quot;Times&amp;quot;,&amp;quot;serif&amp;quot;; font-size: 12pt; line-height: 115%;&quot;&gt;Pessoas&lt;/span&gt;&lt;/b&gt;&lt;span style=&quot;font-family: &amp;quot;Times&amp;quot;,&amp;quot;serif&amp;quot;; font-size: 12pt; line-height: 115%;&quot;&gt;: São os funcionários requeridos para planejar, organizar e adquirir, implementar, entregar, suportar, monitorar e avaliar os sistemas de informação e serviços. Eles podem ser internos, terceirizados ou contratados, conforme necessário.&lt;/span&gt;&lt;span style=&quot;font-family: &amp;quot;Times&amp;quot;,&amp;quot;serif&amp;quot;;&quot;&gt;&lt;o:p&gt;&lt;/o:p&gt;&lt;/span&gt;&lt;/div&gt;&lt;div class=&quot;MsoNormal&quot; style=&quot;text-align: justify;&quot;&gt;&lt;span style=&quot;font-family: &amp;quot;Times&amp;quot;,&amp;quot;serif&amp;quot;; font-size: 12pt; line-height: 115%;&quot;&gt;Os &lt;b&gt;processos&lt;/b&gt; não fazem parte do escopo definido pelo COBIT como &lt;b&gt;Recursos de TI:&lt;/b&gt;&lt;/span&gt;&lt;span style=&quot;font-family: &amp;quot;Times&amp;quot;,&amp;quot;serif&amp;quot;;&quot;&gt;&lt;o:p&gt;&lt;/o:p&gt;&lt;/span&gt;&lt;/div&gt;&lt;div class=&quot;MsoNormal&quot; style=&quot;text-align: justify;&quot;&gt;&lt;span style=&quot;font-family: &amp;quot;Times&amp;quot;,&amp;quot;serif&amp;quot;; font-size: 12pt; line-height: 115%;&quot;&gt;A imagem abaixo mostra a organização dos princípios do COBIT.&lt;/span&gt;&lt;span style=&quot;font-family: &amp;quot;Times&amp;quot;,&amp;quot;serif&amp;quot;;&quot;&gt;&lt;o:p&gt;&lt;/o:p&gt;&lt;/span&gt;&lt;/div&gt;&lt;div class=&quot;MsoNormal&quot;&gt;&lt;br /&gt;
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&lt;div class=&quot;MsoNormal&quot; style=&quot;text-align: justify;&quot;&gt;&lt;b&gt;&lt;span style=&quot;font-family: &amp;quot;Times New Roman&amp;quot;,&amp;quot;serif&amp;quot;; font-size: 12pt; line-height: 115%;&quot;&gt;193 - Resposta: Correta&lt;/span&gt;&lt;/b&gt;&lt;span style=&quot;font-family: &amp;quot;Times New Roman&amp;quot;,&amp;quot;serif&amp;quot;;&quot;&gt;&lt;o:p&gt;&lt;/o:p&gt;&lt;/span&gt;&lt;/div&gt;&lt;div class=&quot;MsoNormal&quot; style=&quot;text-align: justify;&quot;&gt;&lt;span style=&quot;font-family: &amp;quot;Times New Roman&amp;quot;,&amp;quot;serif&amp;quot;; font-size: 12pt; line-height: 115%;&quot;&gt;O procedimento PO4 (&lt;b&gt;Definir os processos, Organização e Relacionamentos de TI&lt;/b&gt;), do domínio &lt;b&gt;Planejar e Organizar, &lt;/b&gt;é descrito da seguinte maneira:&lt;/span&gt;&lt;span style=&quot;font-family: &amp;quot;Times New Roman&amp;quot;,&amp;quot;serif&amp;quot;;&quot;&gt;&lt;o:p&gt;&lt;/o:p&gt;&lt;/span&gt;&lt;/div&gt;&lt;div class=&quot;MsoNormal&quot;&gt;&lt;span style=&quot;font-family: &amp;quot;Times New Roman&amp;quot;,&amp;quot;serif&amp;quot;; font-size: 12pt; line-height: 115%;&quot;&gt;&quot;Uma organização de TI é definida&amp;nbsp; considerando os requisitos de pessoal, habilidades, funções, autoridade, papeis e responsabilidades, rastreabilidade e supervisão. Essa organização deve fazer parte de uma estrutura de processos de TI que assegure transparência e controle, assim como o envolvimento de executivos sênior e a Direção do negócio. Um comitê estratégico deve assegurar a supervisão da direção de TI, e um ou mais comitês dos quais as áreas de negócios e TI participem devem definir a priorização dos recursos de TI em linha com as necessidades do negócio. Os processos, as políticas administrativas e os procedimentos precisam estar estabelecidos para todas as funções, com especial atenção às de controle, garantia de qualidade, gestão de risco, segurança da informação, propriedade de sistemas e dados e segregação de funções. Para assegurar o rápido atendimento das exigências do negócio, a TI deve ser envolvida nos processos de decisão relevantes.&quot;&lt;/span&gt;&lt;span style=&quot;font-family: &amp;quot;Times New Roman&amp;quot;,&amp;quot;serif&amp;quot;;&quot;&gt;&lt;o:p&gt;&lt;/o:p&gt;&lt;/span&gt;&lt;/div&gt;&lt;div class=&quot;MsoNormal&quot;&gt;&lt;u4:p&gt;&lt;span style=&quot;font-family: &amp;quot;Times New Roman&amp;quot;,&amp;quot;serif&amp;quot;;&quot;&gt;As métricas para o Procedimento são:&lt;o:p&gt;&lt;/o:p&gt;&lt;/span&gt;&lt;/u4:p&gt;&lt;/div&gt;&lt;ul type=&quot;disc&quot;&gt;&lt;li class=&quot;MsoNormal&quot; style=&quot;line-height: normal;&quot;&gt;&lt;u4:p&gt;&lt;span style=&quot;font-family: &amp;quot;Times New Roman&amp;quot;,&amp;quot;serif&amp;quot;; font-size: 12pt;&quot;&gt;Percentual de funções com      posições e descrições de autoridade documentadas;&lt;o:p&gt;&lt;/o:p&gt;&lt;/span&gt;&lt;/u4:p&gt;&lt;/li&gt;
&lt;/ul&gt;&lt;ul type=&quot;disc&quot;&gt;&lt;li class=&quot;MsoNormal&quot; style=&quot;line-height: normal;&quot;&gt;&lt;u4:p&gt;&lt;span style=&quot;font-family: &amp;quot;Times New Roman&amp;quot;,&amp;quot;serif&amp;quot;; font-size: 12pt;&quot;&gt;Número de unidades/processos      de negócios não suportados pela organização de TI, mas que deveriam ser      suportados de acordo com a estratégia;&lt;o:p&gt;&lt;/o:p&gt;&lt;/span&gt;&lt;/u4:p&gt;&lt;/li&gt;
&lt;li class=&quot;MsoNormal&quot; style=&quot;line-height: normal;&quot;&gt;&lt;u4:p&gt;&lt;span style=&quot;font-family: &amp;quot;Times New Roman&amp;quot;,&amp;quot;serif&amp;quot;; font-size: 12pt;&quot;&gt;Número de atividades      centrais de TI realizadas fora da organização de TI e que não são      aprovadas ou submetidas aos padrões organizacionais de TI. &lt;br /&gt;
&lt;br /&gt;
&lt;b&gt;&lt;o:p&gt;&lt;/o:p&gt;&lt;/b&gt;&lt;/span&gt;&lt;/u4:p&gt;&lt;/li&gt;
&lt;/ul&gt;&lt;div style=&quot;text-align: justify;&quot;&gt;&lt;u4:p&gt;&lt;b&gt;194 – Resposta: Errada&lt;o:p&gt;&lt;/o:p&gt;&lt;/b&gt;&lt;/u4:p&gt;&lt;/div&gt;&lt;div style=&quot;text-align: justify;&quot;&gt;Essa é bem fácil. A rotatividade de pessoal (&lt;i&gt;turnover&lt;/i&gt;), certamente que é métrica para o gerenciamento de recursos humanos de TI (PO7), que faz parte do domínio de Planejamento e Organização.&lt;/div&gt;&lt;div style=&quot;text-align: justify;&quot;&gt;O procedimento de gestão de recursos humanos de TI é medido por:&lt;/div&gt;&lt;ul&gt;&lt;li&gt;Nível de Satisfação das partes interessadas com as experiências e habilidades da equipe de TI&lt;/li&gt;
&lt;/ul&gt;&lt;ul&gt;&lt;li&gt;Rotatividade da equipe de TI&lt;/li&gt;
&lt;/ul&gt;&lt;ul&gt;&lt;li&gt;Percentual da Equipe de TI certificado de acordo com as necessidades da função&lt;/li&gt;
&lt;/ul&gt;&lt;br /&gt;
Referência: COBIT 4.1 &lt;br /&gt;
&lt;div class=&quot;MsoNormal&quot;&gt;&lt;br /&gt;
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&lt;/div&gt;</content><link rel='replies' type='application/atom+xml' href='http://charles-miranda.blogspot.com/feeds/8667162345506482476/comments/default' title='Postar comentários'/><link rel='replies' type='text/html' href='http://charles-miranda.blogspot.com/2010/04/questoes-tcu-cobit-cespe.html#comment-form' title='0 Comentários'/><link rel='edit' type='application/atom+xml' href='http://www.blogger.com/feeds/8805233244562884169/posts/default/8667162345506482476'/><link rel='self' type='application/atom+xml' href='http://www.blogger.com/feeds/8805233244562884169/posts/default/8667162345506482476'/><link rel='alternate' type='text/html' href='http://charles-miranda.blogspot.com/2010/04/questoes-tcu-cobit-cespe.html' title='Questões TCU  - COBIT (CESPE)'/><author><name>Charles Miranda</name><uri>http://www.blogger.com/profile/03547869376935064170</uri><email>noreply@blogger.com</email><gd:image rel='http://schemas.google.com/g/2005#thumbnail' width='32' height='26' src='//blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjCSpDLcGXHXwkMSEwiixZKX45eVnJ-pDgmRrp8p59MmEBKElP3mimLz-4QiAJOcT4NHdYCpF798rUQ2Z_VY_BUwfqaVzUgbQWQ1Z8x4Qo_0z-6Yitht6N6Bfk6qsAGsw/s220/imagem.JPG'/></author><media:thumbnail xmlns:media="http://search.yahoo.com/mrss/" url="http://2.bp.blogspot.com/_RFt9qXsT53g/S8R1lWv-cpI/AAAAAAAAAKQ/9KqNAdi6QWQ/s72-c/imagem.bmp" height="72" width="72"/><thr:total>0</thr:total></entry><entry><id>tag:blogger.com,1999:blog-8805233244562884169.post-593072709781871697</id><published>2010-04-12T05:34:00.000-07:00</published><updated>2010-04-12T05:34:30.719-07:00</updated><category scheme="http://www.blogger.com/atom/ns#" term="Fundamentos de Computação"/><title type='text'>Questão Petrobrás (Subsistema de memória)</title><content type='html'>&lt;div class=&quot;separator&quot; style=&quot;clear: both; text-align: center;&quot;&gt;&lt;a href=&quot;http://4.bp.blogspot.com/_RFt9qXsT53g/S8MMbqkcjyI/AAAAAAAAAKI/hGcZidNoLXI/s1600/up.bmp&quot; imageanchor=&quot;1&quot; style=&quot;margin-left: 1em; margin-right: 1em;&quot;&gt;&lt;img border=&quot;0&quot; height=&quot;227&quot; src=&quot;http://4.bp.blogspot.com/_RFt9qXsT53g/S8MMbqkcjyI/AAAAAAAAAKI/hGcZidNoLXI/s400/up.bmp&quot; width=&quot;400&quot; /&gt;&lt;/a&gt;&lt;/div&gt;&lt;div style=&quot;text-align: justify;&quot;&gt;&lt;br /&gt;
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&lt;/style&gt;  &lt;/div&gt;&lt;div class=&quot;MsoNormal&quot; style=&quot;line-height: normal; text-align: justify;&quot;&gt;&lt;b&gt;&lt;span style=&quot;font-family: &amp;quot;Times New Roman&amp;quot;,&amp;quot;serif&amp;quot;; font-size: 12pt;&quot;&gt;Resposta: alternativa E &lt;/span&gt;&lt;/b&gt;&lt;span style=&quot;font-family: &amp;quot;Times New Roman&amp;quot;,&amp;quot;serif&amp;quot;; font-size: 12pt;&quot;&gt;&lt;o:p&gt;&lt;/o:p&gt;&lt;/span&gt;&lt;/div&gt;&lt;div&gt;&lt;/div&gt;&lt;div class=&quot;MsoNormal&quot; style=&quot;line-height: normal; text-align: justify;&quot;&gt;&lt;span style=&quot;font-family: &amp;quot;Times New Roman&amp;quot;,&amp;quot;serif&amp;quot;; font-size: 12pt;&quot;&gt;O &lt;b&gt;REM (Registrador de Endereços da Memória)&lt;/b&gt; ou &lt;b&gt;MAR (Memory Access Register)&lt;/b&gt; é o registrador, interno ao processador, que tem por função armazenar, temporariamente, o endereço de acesso a&amp;nbsp; uma posição de memória.&amp;nbsp; &lt;o:p&gt;&lt;br /&gt;
&lt;/o:p&gt;&lt;/span&gt;&lt;/div&gt;&lt;div style=&quot;text-align: justify;&quot;&gt;&lt;/div&gt;&lt;div class=&quot;MsoNormal&quot; style=&quot;line-height: normal; text-align: justify;&quot;&gt;&lt;span style=&quot;font-family: &amp;quot;Times New Roman&amp;quot;,&amp;quot;serif&amp;quot;; font-size: 12pt;&quot;&gt;O &lt;b&gt;RDM (Registrador de Dados da Memória&lt;/b&gt;)&lt;b&gt; (Momory Buffer Register - MBR)&lt;/b&gt;, também interno ao processador, tem por função armazenar, temporariamente, a informação (Conteúdo de uma ou mais células) que está sendo transferida da MP para a CPU ou da CPU para a MP.&lt;o:p&gt; &lt;/o:p&gt;&lt;/span&gt;&lt;/div&gt;&lt;div style=&quot;text-align: justify;&quot;&gt;&lt;/div&gt;&lt;div class=&quot;MsoNormal&quot; style=&quot;line-height: normal; text-align: justify;&quot;&gt;&lt;b&gt;&lt;span style=&quot;font-family: &amp;quot;Times New Roman&amp;quot;,&amp;quot;serif&amp;quot;; font-size: 12pt;&quot;&gt;Barra de Dados &lt;/span&gt;&lt;/b&gt;&lt;span style=&quot;font-family: &amp;quot;Times New Roman&amp;quot;,&amp;quot;serif&amp;quot;; font-size: 12pt;&quot;&gt;ou&lt;b&gt; Barramento de Dados (BD)&lt;/b&gt; interliga o RDM à Memória Principal (MP). Nele os dados trafegam nos dois sentidos, ou seja, tanto da CPU para a MP quando da MP para a CPU.&lt;o:p&gt; &lt;/o:p&gt;&lt;/span&gt;&lt;/div&gt;&lt;div style=&quot;text-align: justify;&quot;&gt;&lt;/div&gt;&lt;div class=&quot;MsoNormal&quot; style=&quot;line-height: normal; text-align: justify;&quot;&gt;&lt;span style=&quot;font-family: &amp;quot;Times New Roman&amp;quot;,&amp;quot;serif&amp;quot;; font-size: 12pt;&quot;&gt;O BD e o RDM possuem o mesmo tamanho em bits.&amp;nbsp; Pois o BD é responsável por interligar o RDM à MP.&lt;o:p&gt; &lt;/o:p&gt;&lt;/span&gt;&lt;/div&gt;&lt;div style=&quot;text-align: justify;&quot;&gt;&lt;/div&gt;&lt;div class=&quot;MsoNormal&quot; style=&quot;line-height: normal; text-align: justify;&quot;&gt;&lt;span style=&quot;font-family: &amp;quot;Times New Roman&amp;quot;,&amp;quot;serif&amp;quot;; font-size: 12pt;&quot;&gt;A questão diz que o tamanho da Barra de dados é igual a 16 bits. Sendo assim, o tamanho do RDM também será de 16 bits. Diz ainda, que a barra de dados possui o mesmo tamanho da palavra.&lt;o:p&gt;&lt;br /&gt;
&lt;/o:p&gt;&lt;/span&gt;&lt;/div&gt;&lt;div style=&quot;text-align: justify;&quot;&gt;&lt;/div&gt;&lt;div class=&quot;MsoNormal&quot; style=&quot;line-height: normal; text-align: justify;&quot;&gt;&lt;span style=&quot;font-family: &amp;quot;Times New Roman&amp;quot;,&amp;quot;serif&amp;quot;; font-size: 12pt;&quot;&gt;Como a questão não se refere em nenhum momento a &lt;b&gt;células&lt;/b&gt; de memória, pode-se considerar que o endereçamento é feito através de palavras, como unidades básicas de memória. Desta forma, considerando N o total de endereços na memória, temos que:&lt;o:p&gt; &lt;/o:p&gt;&lt;/span&gt;&lt;/div&gt;&lt;div style=&quot;text-align: justify;&quot;&gt;&lt;/div&gt;&lt;div class=&quot;MsoNormal&quot; style=&quot;line-height: normal; text-align: justify;&quot;&gt;&lt;span style=&quot;font-family: &amp;quot;Times New Roman&amp;quot;,&amp;quot;serif&amp;quot;; font-size: 12pt;&quot;&gt;N = (2^16)/16&amp;nbsp;&lt;o:p&gt;&lt;/o:p&gt;&lt;/span&gt;&lt;/div&gt;&lt;div style=&quot;text-align: justify;&quot;&gt;&lt;/div&gt;&lt;div class=&quot;MsoNormal&quot; style=&quot;line-height: normal; text-align: justify;&quot;&gt;&lt;span style=&quot;font-family: &amp;quot;Times New Roman&amp;quot;,&amp;quot;serif&amp;quot;; font-size: 12pt;&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp; = (2^16)/(2^4)&lt;o:p&gt;&lt;/o:p&gt;&lt;/span&gt;&lt;/div&gt;&lt;div style=&quot;text-align: justify;&quot;&gt;&lt;/div&gt;&lt;div class=&quot;MsoNormal&quot; style=&quot;line-height: normal; text-align: justify;&quot;&gt;&lt;span style=&quot;font-family: &amp;quot;Times New Roman&amp;quot;,&amp;quot;serif&amp;quot;; font-size: 12pt;&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp; = 2^12&lt;o:p&gt;&lt;/o:p&gt;&lt;/span&gt;&lt;/div&gt;&lt;div style=&quot;text-align: justify;&quot;&gt;&lt;/div&gt;&lt;div class=&quot;MsoNormal&quot; style=&quot;line-height: normal; text-align: justify;&quot;&gt;&lt;span style=&quot;font-family: &amp;quot;Times New Roman&amp;quot;,&amp;quot;serif&amp;quot;; font-size: 12pt;&quot;&gt;Ou seja, esta unidade de memória pode endereçar 2^12 palavras. &lt;o:p&gt;&lt;/o:p&gt;&lt;/span&gt;&lt;/div&gt;&lt;div style=&quot;text-align: justify;&quot;&gt;&lt;/div&gt;&lt;div class=&quot;MsoNormal&quot; style=&quot;line-height: normal; text-align: justify;&quot;&gt;&lt;span style=&quot;font-family: &amp;quot;Times New Roman&amp;quot;,&amp;quot;serif&amp;quot;; font-size: 12pt;&quot;&gt;Deve-se observar agora o seguinte:&lt;o:p&gt;&lt;/o:p&gt;&lt;/span&gt;&lt;/div&gt;&lt;div style=&quot;text-align: justify;&quot;&gt;&lt;/div&gt;&lt;div class=&quot;MsoNormal&quot; style=&quot;line-height: normal; text-align: justify;&quot;&gt;&lt;span style=&quot;font-family: &amp;quot;Times New Roman&amp;quot;,&amp;quot;serif&amp;quot;; font-size: 12pt;&quot;&gt;O tamanho do &lt;b&gt;Registrador de Endereços da Memória (REM)&lt;/b&gt; é igual ao número de bits dos números que representam cada um dos N endereços.&lt;o:p&gt; &lt;/o:p&gt;&lt;/span&gt;&lt;/div&gt;&lt;div style=&quot;text-align: justify;&quot;&gt;&lt;/div&gt;&lt;div class=&quot;MsoNormal&quot; style=&quot;line-height: normal; text-align: justify;&quot;&gt;&lt;span style=&quot;font-family: &amp;quot;Times New Roman&amp;quot;,&amp;quot;serif&amp;quot;; font-size: 12pt;&quot;&gt;Observe que, se tivéssemos 4 (2^2) endereços, precisaríamos de 2 bits para representar estes endereços, ou seja:&lt;o:p&gt;&lt;/o:p&gt;&lt;/span&gt;&lt;/div&gt;&lt;div style=&quot;text-align: justify;&quot;&gt;&lt;/div&gt;&lt;div class=&quot;MsoNormal&quot; style=&quot;line-height: normal; text-align: justify;&quot;&gt;&lt;span style=&quot;font-family: &amp;quot;Times New Roman&amp;quot;,&amp;quot;serif&amp;quot;; font-size: 12pt;&quot;&gt;0 0&lt;o:p&gt;&lt;/o:p&gt;&lt;/span&gt;&lt;/div&gt;&lt;div style=&quot;text-align: justify;&quot;&gt;&lt;/div&gt;&lt;div class=&quot;MsoNormal&quot; style=&quot;line-height: normal; text-align: justify;&quot;&gt;&lt;span style=&quot;font-family: &amp;quot;Times New Roman&amp;quot;,&amp;quot;serif&amp;quot;; font-size: 12pt;&quot;&gt;0 1&lt;o:p&gt;&lt;/o:p&gt;&lt;/span&gt;&lt;/div&gt;&lt;div style=&quot;text-align: justify;&quot;&gt;&lt;/div&gt;&lt;div class=&quot;MsoNormal&quot; style=&quot;line-height: normal; text-align: justify;&quot;&gt;&lt;span style=&quot;font-family: &amp;quot;Times New Roman&amp;quot;,&amp;quot;serif&amp;quot;; font-size: 12pt;&quot;&gt;1 0&lt;o:p&gt;&lt;/o:p&gt;&lt;/span&gt;&lt;/div&gt;&lt;div style=&quot;text-align: justify;&quot;&gt;&lt;/div&gt;&lt;div class=&quot;MsoNormal&quot; style=&quot;line-height: normal; text-align: justify;&quot;&gt;&lt;span style=&quot;font-family: &amp;quot;Times New Roman&amp;quot;,&amp;quot;serif&amp;quot;; font-size: 12pt;&quot;&gt;1 1&lt;br /&gt;
Ainda, se tivéssemos 8 (2^3) endereços, precisaríamos de 3 bits para representá-los:&amp;nbsp;&lt;o:p&gt;&lt;/o:p&gt;&lt;/span&gt;&lt;/div&gt;&lt;div style=&quot;text-align: justify;&quot;&gt;&lt;/div&gt;&lt;div class=&quot;MsoNormal&quot; style=&quot;line-height: normal; text-align: justify;&quot;&gt;&lt;span style=&quot;font-family: &amp;quot;Times New Roman&amp;quot;,&amp;quot;serif&amp;quot;; font-size: 12pt;&quot;&gt;0 0 0&lt;o:p&gt;&lt;/o:p&gt;&lt;/span&gt;&lt;/div&gt;&lt;div style=&quot;text-align: justify;&quot;&gt;&lt;/div&gt;&lt;div class=&quot;MsoNormal&quot; style=&quot;line-height: normal; text-align: justify;&quot;&gt;&lt;span style=&quot;font-family: &amp;quot;Times New Roman&amp;quot;,&amp;quot;serif&amp;quot;; font-size: 12pt;&quot;&gt;0 0 1&lt;o:p&gt;&lt;/o:p&gt;&lt;/span&gt;&lt;/div&gt;&lt;div style=&quot;text-align: justify;&quot;&gt;&lt;/div&gt;&lt;div class=&quot;MsoNormal&quot; style=&quot;line-height: normal; text-align: justify;&quot;&gt;&lt;span style=&quot;font-family: &amp;quot;Times New Roman&amp;quot;,&amp;quot;serif&amp;quot;; font-size: 12pt;&quot;&gt;0 1 0&lt;o:p&gt;&lt;/o:p&gt;&lt;/span&gt;&lt;/div&gt;&lt;div style=&quot;text-align: justify;&quot;&gt;&lt;/div&gt;&lt;div class=&quot;MsoNormal&quot; style=&quot;line-height: normal; text-align: justify;&quot;&gt;&lt;span style=&quot;font-family: &amp;quot;Times New Roman&amp;quot;,&amp;quot;serif&amp;quot;; font-size: 12pt;&quot;&gt;0 1 1&lt;o:p&gt;&lt;/o:p&gt;&lt;/span&gt;&lt;/div&gt;&lt;div style=&quot;text-align: justify;&quot;&gt;&lt;/div&gt;&lt;div class=&quot;MsoNormal&quot; style=&quot;line-height: normal; text-align: justify;&quot;&gt;&lt;span style=&quot;font-family: &amp;quot;Times New Roman&amp;quot;,&amp;quot;serif&amp;quot;; font-size: 12pt;&quot;&gt;1 0 0&lt;o:p&gt;&lt;/o:p&gt;&lt;/span&gt;&lt;/div&gt;&lt;div style=&quot;text-align: justify;&quot;&gt;&lt;/div&gt;&lt;div class=&quot;MsoNormal&quot; style=&quot;line-height: normal; text-align: justify;&quot;&gt;&lt;span style=&quot;font-family: &amp;quot;Times New Roman&amp;quot;,&amp;quot;serif&amp;quot;; font-size: 12pt;&quot;&gt;1 0 1&lt;o:p&gt;&lt;/o:p&gt;&lt;/span&gt;&lt;/div&gt;&lt;div style=&quot;text-align: justify;&quot;&gt;&lt;/div&gt;&lt;div class=&quot;MsoNormal&quot; style=&quot;line-height: normal; text-align: justify;&quot;&gt;&lt;span style=&quot;font-family: &amp;quot;Times New Roman&amp;quot;,&amp;quot;serif&amp;quot;; font-size: 12pt;&quot;&gt;1 1 0&lt;o:p&gt;&lt;/o:p&gt;&lt;/span&gt;&lt;/div&gt;&lt;div style=&quot;text-align: justify;&quot;&gt;&lt;/div&gt;&lt;div class=&quot;MsoNormal&quot; style=&quot;line-height: normal; text-align: justify;&quot;&gt;&lt;span style=&quot;font-family: &amp;quot;Times New Roman&amp;quot;,&amp;quot;serif&amp;quot;; font-size: 12pt;&quot;&gt;1 1 1&lt;o:p&gt; &lt;/o:p&gt;&lt;/span&gt;&lt;/div&gt;&lt;div style=&quot;text-align: justify;&quot;&gt;&lt;/div&gt;&lt;div class=&quot;MsoNormal&quot; style=&quot;line-height: normal; text-align: justify;&quot;&gt;&lt;span style=&quot;font-family: &amp;quot;Times New Roman&amp;quot;,&amp;quot;serif&amp;quot;; font-size: 12pt;&quot;&gt;E se tivermos N endereços precisamos de E bits para representá-los, de forma que N = 2^E.&lt;o:p&gt;&lt;/o:p&gt;&amp;nbsp;&lt;/span&gt;&lt;/div&gt;&lt;div class=&quot;MsoNormal&quot; style=&quot;line-height: normal; text-align: justify;&quot;&gt;&lt;span style=&quot;font-family: &amp;quot;Times New Roman&amp;quot;,&amp;quot;serif&amp;quot;; font-size: 12pt;&quot;&gt;Assim, como neste caso N=2^12, temos que &lt;o:p&gt;&lt;/o:p&gt;&lt;/span&gt;&lt;/div&gt;&lt;div style=&quot;text-align: justify;&quot;&gt;&lt;/div&gt;&lt;div class=&quot;MsoNormal&quot; style=&quot;line-height: normal; text-align: justify;&quot;&gt;&lt;span style=&quot;font-family: &amp;quot;Times New Roman&amp;quot;,&amp;quot;serif&amp;quot;; font-size: 12pt;&quot;&gt;N = 2^E =&amp;gt;&amp;nbsp; 2^12 = 2^E =&amp;gt; E=12&lt;o:p&gt; &lt;/o:p&gt;&lt;/span&gt;&lt;/div&gt;&lt;div style=&quot;text-align: justify;&quot;&gt;&lt;/div&gt;&lt;div class=&quot;MsoNormal&quot; style=&quot;line-height: normal; text-align: justify;&quot;&gt;&lt;span style=&quot;font-family: &amp;quot;Times New Roman&amp;quot;,&amp;quot;serif&amp;quot;; font-size: 12pt;&quot;&gt;O que mostra que cada endereço da memória é representado por 12 bits, ou seja, o tamanho do &lt;b&gt;REM&lt;/b&gt; é igual a 12 bits.&lt;o:p&gt;&lt;/o:p&gt;&lt;/span&gt;&lt;/div&gt;</content><link rel='replies' type='application/atom+xml' href='http://charles-miranda.blogspot.com/feeds/593072709781871697/comments/default' title='Postar comentários'/><link rel='replies' type='text/html' href='http://charles-miranda.blogspot.com/2010/04/questao-petrobras-subsistema-de-memoria.html#comment-form' title='0 Comentários'/><link rel='edit' type='application/atom+xml' href='http://www.blogger.com/feeds/8805233244562884169/posts/default/593072709781871697'/><link rel='self' type='application/atom+xml' href='http://www.blogger.com/feeds/8805233244562884169/posts/default/593072709781871697'/><link rel='alternate' type='text/html' href='http://charles-miranda.blogspot.com/2010/04/questao-petrobras-subsistema-de-memoria.html' title='Questão Petrobrás (Subsistema de memória)'/><author><name>Charles Miranda</name><uri>http://www.blogger.com/profile/03547869376935064170</uri><email>noreply@blogger.com</email><gd:image rel='http://schemas.google.com/g/2005#thumbnail' width='32' height='26' src='//blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjCSpDLcGXHXwkMSEwiixZKX45eVnJ-pDgmRrp8p59MmEBKElP3mimLz-4QiAJOcT4NHdYCpF798rUQ2Z_VY_BUwfqaVzUgbQWQ1Z8x4Qo_0z-6Yitht6N6Bfk6qsAGsw/s220/imagem.JPG'/></author><media:thumbnail xmlns:media="http://search.yahoo.com/mrss/" url="http://4.bp.blogspot.com/_RFt9qXsT53g/S8MMbqkcjyI/AAAAAAAAAKI/hGcZidNoLXI/s72-c/up.bmp" height="72" width="72"/><thr:total>0</thr:total></entry><entry><id>tag:blogger.com,1999:blog-8805233244562884169.post-8468573549219658458</id><published>2010-04-11T18:57:00.000-07:00</published><updated>2010-04-11T19:01:05.083-07:00</updated><category scheme="http://www.blogger.com/atom/ns#" term="Segurança da Informação"/><title type='text'>Questão - Perito Criminal Federal, Computação Científica</title><content type='html'>&lt;div class=&quot;separator&quot; 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&lt;div style=&quot;text-align: justify;&quot;&gt;&lt;b&gt;Resposta: Errada&lt;/b&gt;&lt;/div&gt;&lt;div&gt;&lt;/div&gt;&lt;div style=&quot;text-align: justify;&quot;&gt;&lt;br /&gt;
&lt;/div&gt;&lt;div style=&quot;text-align: justify;&quot;&gt;&lt;/div&gt;&lt;div style=&quot;text-align: justify;&quot;&gt;De fato, o Algoritmo&amp;nbsp;&lt;b&gt; DES (Data Encryption Standard), &lt;/b&gt;desenvolvido em 1977, pela IBM, em sua forma original já não é mais seguro. O algoritmo usa blocos de dados de 64 bits e uma chave de 56 bits, com 19 estágios distintos. Foi projetado para permitir que a decodificação fosse feita com a mesma chave da codificação, propriedade necessária em &lt;b&gt;algoritmos de chave simétrica.&lt;/b&gt;&lt;/div&gt;&lt;div style=&quot;text-align: justify;&quot;&gt;&lt;/div&gt;&lt;div style=&quot;text-align: justify;&quot;&gt;&lt;br /&gt;
&lt;/div&gt;&lt;div style=&quot;text-align: justify;&quot;&gt;O erro da questão está na descrição do Algoritmo &lt;b&gt;DES Triplo&lt;/b&gt;. O &lt;b&gt;DES Triplo foi&lt;/b&gt; desenvolvido também pela IBM, em 1979. Neste algoritmo são usados &lt;b&gt;três estágios&lt;/b&gt; (EDE - Encrypt Decrypt Encrypt) e &lt;b&gt;duas chaves de 56 bits&lt;/b&gt;, o que permite uma chave total efetiva de 112 bits. São usados, assim como no DES, blocos de dados de 64 bits.&lt;/div&gt;&lt;div style=&quot;text-align: justify;&quot;&gt;&lt;/div&gt;&lt;div style=&quot;text-align: justify;&quot;&gt;&lt;br /&gt;
&lt;/div&gt;&lt;div style=&quot;text-align: justify;&quot;&gt;&lt;/div&gt;&lt;div style=&quot;text-align: justify;&quot;&gt;Referência: Redes de Computadores, Tanenbaum p. 778.&lt;/div&gt;&lt;div style=&quot;text-align: justify;&quot;&gt;&lt;/div&gt;&lt;div class=&quot;MsoNormal&quot; style=&quot;text-align: justify;&quot;&gt;&lt;br /&gt;
&lt;/div&gt;</content><link rel='replies' type='application/atom+xml' href='http://charles-miranda.blogspot.com/feeds/8468573549219658458/comments/default' title='Postar comentários'/><link rel='replies' type='text/html' href='http://charles-miranda.blogspot.com/2010/04/questao-perito-criminal-federal_11.html#comment-form' title='0 Comentários'/><link rel='edit' type='application/atom+xml' href='http://www.blogger.com/feeds/8805233244562884169/posts/default/8468573549219658458'/><link rel='self' type='application/atom+xml' href='http://www.blogger.com/feeds/8805233244562884169/posts/default/8468573549219658458'/><link rel='alternate' type='text/html' href='http://charles-miranda.blogspot.com/2010/04/questao-perito-criminal-federal_11.html' title='Questão - Perito Criminal Federal, Computação Científica'/><author><name>Charles Miranda</name><uri>http://www.blogger.com/profile/03547869376935064170</uri><email>noreply@blogger.com</email><gd:image rel='http://schemas.google.com/g/2005#thumbnail' width='32' height='26' src='//blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjCSpDLcGXHXwkMSEwiixZKX45eVnJ-pDgmRrp8p59MmEBKElP3mimLz-4QiAJOcT4NHdYCpF798rUQ2Z_VY_BUwfqaVzUgbQWQ1Z8x4Qo_0z-6Yitht6N6Bfk6qsAGsw/s220/imagem.JPG'/></author><media:thumbnail xmlns:media="http://search.yahoo.com/mrss/" url="http://3.bp.blogspot.com/_RFt9qXsT53g/S8J6Injk8yI/AAAAAAAAAKA/SAwUK6pb8UA/s72-c/2.bmp" height="72" width="72"/><thr:total>0</thr:total></entry><entry><id>tag:blogger.com,1999:blog-8805233244562884169.post-3006046339555536065</id><published>2010-04-11T14:19:00.000-07:00</published><updated>2010-04-11T14:27:10.483-07:00</updated><category scheme="http://www.blogger.com/atom/ns#" term="Governança de TI"/><title type='text'>Questões TRE-BA (COBIT)</title><content type='html'>&lt;div class=&quot;separator&quot; style=&quot;clear: both; text-align: center;&quot;&gt;&lt;/div&gt;&lt;div class=&quot;separator&quot; style=&quot;clear: both; text-align: center;&quot;&gt;&lt;/div&gt;&lt;div class=&quot;separator&quot; style=&quot;clear: both; text-align: center;&quot;&gt;&lt;/div&gt;&lt;div class=&quot;separator&quot; style=&quot;clear: both; text-align: center;&quot;&gt;&lt;/div&gt;&lt;div class=&quot;separator&quot; style=&quot;clear: both; text-align: center;&quot;&gt;&lt;/div&gt;&lt;div class=&quot;separator&quot; style=&quot;clear: both; text-align: center;&quot;&gt;&lt;/div&gt;&lt;div class=&quot;separator&quot; style=&quot;clear: both; text-align: center;&quot;&gt;&lt;/div&gt;&lt;div class=&quot;separator&quot; style=&quot;clear: both; text-align: center;&quot;&gt;&lt;/div&gt;&lt;div class=&quot;separator&quot; style=&quot;clear: both; text-align: center;&quot;&gt;&lt;/div&gt;&lt;div class=&quot;separator&quot; style=&quot;clear: both; text-align: center;&quot;&gt;&lt;/div&gt;&lt;div class=&quot;separator&quot; style=&quot;clear: both; text-align: center;&quot;&gt;&lt;/div&gt;&lt;div class=&quot;separator&quot; style=&quot;clear: both; text-align: center;&quot;&gt;&lt;br /&gt;
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&lt;div class=&quot;MsoNormal&quot; style=&quot;line-height: normal; text-align: justify;&quot;&gt;&lt;b&gt;&lt;span style=&quot;font-family: &amp;quot;Times New Roman&amp;quot;,&amp;quot;serif&amp;quot;; font-size: 12pt;&quot;&gt;90 - Resposta: correta &lt;/span&gt;&lt;/b&gt;&lt;span style=&quot;font-family: &amp;quot;Times New Roman&amp;quot;,&amp;quot;serif&amp;quot;; font-size: 12pt;&quot;&gt;&lt;o:p&gt;&lt;/o:p&gt;&lt;/span&gt;&lt;/div&gt;&lt;div class=&quot;MsoNormal&quot; style=&quot;line-height: normal; text-align: justify;&quot;&gt;&lt;br /&gt;
&lt;/div&gt;&lt;div class=&quot;MsoNormal&quot; style=&quot;line-height: normal; text-align: justify;&quot;&gt;&lt;span style=&quot;font-family: &amp;quot;Times New Roman&amp;quot;,&amp;quot;serif&amp;quot;; font-size: 12pt;&quot;&gt;Segundo o COBIT 4.1,&amp;nbsp; para muitas organizações, a informação e a tecnologia que a suporta representam o seu bem mais valioso, mas muitas vezes é o menos compreendido. Organizações bem sucedidas reconhecem os benefícios da tecnologia da informação e a utiliza para direcionar os valores das partes interessadas no negócio. Essas informações também entendem e gerenciam os riscos associados, tais como as crescentes demandas regulatórias e a dependência crítica de muitos processos de negócios de TI.&lt;o:p&gt;&lt;/o:p&gt;&lt;/span&gt;&lt;/div&gt;&lt;div class=&quot;MsoNormal&quot; style=&quot;line-height: normal; text-align: justify;&quot;&gt;&lt;/div&gt;&lt;div class=&quot;MsoNormal&quot; style=&quot;line-height: normal; text-align: justify;&quot;&gt;&lt;span style=&quot;font-family: &amp;quot;Times New Roman&amp;quot;,&amp;quot;serif&amp;quot;; font-size: 12pt;&quot;&gt;A avaliação do valor de TI, o gerenciamento dos riscos relacionados à TI e as crescentes necessidades de controle sobre as informações são entendidos como elementos-chave da governança corporativa. Valor, risco e controle constituem a essência da governança de TI.&lt;o:p&gt;&lt;/o:p&gt;&lt;/span&gt;&lt;/div&gt;&lt;div class=&quot;MsoNormal&quot; style=&quot;line-height: normal; text-align: justify;&quot;&gt;&lt;span style=&quot;font-family: &amp;quot;Times New Roman&amp;quot;,&amp;quot;serif&amp;quot;; font-size: 12pt;&quot;&gt;A governança de TI integra e institucionaliza boas práticas para garantir que a área de TI da organização suporte os objetivos de negócios.&lt;o:p&gt;&lt;/o:p&gt;&lt;/span&gt;&lt;/div&gt;&lt;div class=&quot;MsoNormal&quot; style=&quot;line-height: normal; text-align: justify;&quot;&gt;&lt;span style=&quot;font-family: &amp;quot;Times New Roman&amp;quot;,&amp;quot;serif&amp;quot;; font-size: 12pt;&quot;&gt;Fatores que devem ser atendidos para que se obtenha sucesso na área de TI:&lt;o:p&gt;&lt;/o:p&gt;&lt;/span&gt;&lt;/div&gt;&lt;div class=&quot;MsoNormal&quot; style=&quot;line-height: normal; text-align: justify;&quot;&gt;&lt;/div&gt;&lt;ul type=&quot;disc&quot;&gt;&lt;li class=&quot;MsoNormal&quot; style=&quot;line-height: normal; text-align: justify;&quot;&gt;&lt;span style=&quot;font-family: &amp;quot;Times New Roman&amp;quot;,&amp;quot;serif&amp;quot;; font-size: 12pt;&quot;&gt;&amp;nbsp;Fazer      uma ligação com os requisitos de negócios.&lt;o:p&gt;&lt;/o:p&gt;&lt;/span&gt;&lt;/li&gt;
&lt;li class=&quot;MsoNormal&quot; style=&quot;line-height: normal; text-align: justify;&quot;&gt;&lt;span style=&quot;font-family: &amp;quot;Times New Roman&amp;quot;,&amp;quot;serif&amp;quot;; font-size: 12pt;&quot;&gt;Organizar      as atividades de TI em um modelo de processos geralmente aceito.&lt;o:p&gt;&lt;/o:p&gt;&lt;/span&gt;&lt;/li&gt;
&lt;li class=&quot;MsoNormal&quot; style=&quot;line-height: normal; text-align: justify;&quot;&gt;&lt;span style=&quot;font-family: &amp;quot;Times New Roman&amp;quot;,&amp;quot;serif&amp;quot;; font-size: 12pt;&quot;&gt;Identificar      os mais importantes recursos de TI a serem utilizados.&lt;o:p&gt;&lt;/o:p&gt;&lt;/span&gt;&lt;/li&gt;
&lt;li class=&quot;MsoNormal&quot; style=&quot;line-height: normal; text-align: justify;&quot;&gt;&lt;span style=&quot;font-family: &amp;quot;Times New Roman&amp;quot;,&amp;quot;serif&amp;quot;; font-size: 12pt;&quot;&gt;Definir      os objetivos de controle gerenciais a serem considerados.&lt;/span&gt;&lt;/li&gt;
&lt;/ul&gt;&lt;div class=&quot;MsoNormal&quot; style=&quot;line-height: normal; text-align: justify;&quot;&gt;&lt;span style=&quot;font-family: &amp;quot;Times New Roman&amp;quot;,&amp;quot;serif&amp;quot;; font-size: 12pt;&quot;&gt;&lt;/span&gt;&lt;br /&gt;
&lt;span style=&quot;font-family: &amp;quot;Times New Roman&amp;quot;,&amp;quot;serif&amp;quot;; font-size: 12pt;&quot;&gt;&lt;/span&gt;&lt;br /&gt;
&lt;span style=&quot;font-family: &amp;quot;Times New Roman&amp;quot;,&amp;quot;serif&amp;quot;; font-size: 12pt;&quot;&gt;&lt;/span&gt;&lt;br /&gt;
&lt;span style=&quot;font-family: &amp;quot;Times New Roman&amp;quot;,&amp;quot;serif&amp;quot;; font-size: 12pt;&quot;&gt;&lt;o:p&gt;&lt;/o:p&gt;&lt;/span&gt;&lt;/div&gt;&lt;div class=&quot;MsoNormal&quot; style=&quot;line-height: normal; text-align: justify;&quot;&gt;&lt;br /&gt;
&lt;b&gt;&lt;span style=&quot;font-family: &amp;quot;Times New Roman&amp;quot;,&amp;quot;serif&amp;quot;; font-size: 12pt;&quot;&gt;91 - Resposta: errada&lt;/span&gt;&lt;/b&gt;&lt;span style=&quot;font-family: &amp;quot;Times New Roman&amp;quot;,&amp;quot;serif&amp;quot;; font-size: 12pt;&quot;&gt;&lt;o:p&gt;&lt;/o:p&gt;&lt;/span&gt;&lt;/div&gt;&lt;div class=&quot;MsoNormal&quot; style=&quot;line-height: normal; text-align: justify;&quot;&gt;&lt;b&gt;&lt;span style=&quot;font-family: &amp;quot;Times New Roman&amp;quot;,&amp;quot;serif&amp;quot;; font-size: 12pt;&quot;&gt;&amp;nbsp;&lt;/span&gt;&lt;/b&gt;&lt;span style=&quot;font-family: &amp;quot;Times New Roman&amp;quot;,&amp;quot;serif&amp;quot;; font-size: 12pt;&quot;&gt;No domínio de Planejamento e Organização do COBIT são desenvolvidos os seguintes procedimentos:&lt;o:p&gt; &lt;/o:p&gt;&lt;/span&gt;&lt;/div&gt;&lt;ul type=&quot;disc&quot;&gt;&lt;li class=&quot;MsoNormal&quot; style=&quot;line-height: normal; text-align: justify;&quot;&gt;&lt;span style=&quot;font-family: &amp;quot;Times New Roman&amp;quot;,&amp;quot;serif&amp;quot;; font-size: 12pt;&quot;&gt;PO1      Definir um plano estratégico de TI&lt;o:p&gt;&lt;/o:p&gt;&lt;/span&gt;&lt;/li&gt;
&lt;li class=&quot;MsoNormal&quot; style=&quot;line-height: normal; text-align: justify;&quot;&gt;&lt;span style=&quot;font-family: &amp;quot;Times New Roman&amp;quot;,&amp;quot;serif&amp;quot;; font-size: 12pt;&quot;&gt;PO2      Definir a arquitetura da informação&lt;o:p&gt;&lt;/o:p&gt;&lt;/span&gt;&lt;/li&gt;
&lt;li class=&quot;MsoNormal&quot; style=&quot;line-height: normal; text-align: justify;&quot;&gt;&lt;span style=&quot;font-family: &amp;quot;Times New Roman&amp;quot;,&amp;quot;serif&amp;quot;; font-size: 12pt;&quot;&gt;PO3      Determinar as Diretrizes de Tecnologia&lt;o:p&gt;&lt;/o:p&gt;&lt;/span&gt;&lt;/li&gt;
&lt;li class=&quot;MsoNormal&quot; style=&quot;line-height: normal; text-align: justify;&quot;&gt;&lt;span style=&quot;font-family: &amp;quot;Times New Roman&amp;quot;,&amp;quot;serif&amp;quot;; font-size: 12pt;&quot;&gt;PO4      Definir os Processos, a Organização e os Regulamentos de TI&lt;o:p&gt;&lt;/o:p&gt;&lt;/span&gt;&lt;/li&gt;
&lt;li class=&quot;MsoNormal&quot; style=&quot;line-height: normal; text-align: justify;&quot;&gt;&lt;span style=&quot;font-family: &amp;quot;Times New Roman&amp;quot;,&amp;quot;serif&amp;quot;; font-size: 12pt;&quot;&gt;PO5      Gerenciar os investimentos de TI&lt;o:p&gt;&lt;/o:p&gt;&lt;/span&gt;&lt;/li&gt;
&lt;li class=&quot;MsoNormal&quot; style=&quot;line-height: normal; text-align: justify;&quot;&gt;&lt;span style=&quot;font-family: &amp;quot;Times New Roman&amp;quot;,&amp;quot;serif&amp;quot;; font-size: 12pt;&quot;&gt;PO6      Comunicar Metas e Diretrizes Gerenciais&lt;o:p&gt;&lt;/o:p&gt;&lt;/span&gt;&lt;/li&gt;
&lt;li class=&quot;MsoNormal&quot; style=&quot;line-height: normal; text-align: justify;&quot;&gt;&lt;span style=&quot;font-family: &amp;quot;Times New Roman&amp;quot;,&amp;quot;serif&amp;quot;; font-size: 12pt;&quot;&gt;PO7      Gerenciar os Recursos Humanos de TI&lt;o:p&gt;&lt;/o:p&gt;&lt;/span&gt;&lt;/li&gt;
&lt;li class=&quot;MsoNormal&quot; style=&quot;line-height: normal; text-align: justify;&quot;&gt;&lt;span style=&quot;font-family: &amp;quot;Times New Roman&amp;quot;,&amp;quot;serif&amp;quot;; font-size: 12pt;&quot;&gt;PO8      Gerenciar a Qualidade&lt;o:p&gt;&lt;/o:p&gt;&lt;/span&gt;&lt;/li&gt;
&lt;li class=&quot;MsoNormal&quot; style=&quot;line-height: normal; text-align: justify;&quot;&gt;&lt;span style=&quot;font-family: &amp;quot;Times New Roman&amp;quot;,&amp;quot;serif&amp;quot;; font-size: 12pt;&quot;&gt;PO9 Avaliar      e Gerenciar os Riscos de TI&lt;o:p&gt;&lt;/o:p&gt;&lt;/span&gt;&lt;/li&gt;
&lt;li class=&quot;MsoNormal&quot; style=&quot;line-height: normal; text-align: justify;&quot;&gt;&lt;span style=&quot;font-family: &amp;quot;Times New Roman&amp;quot;,&amp;quot;serif&amp;quot;; font-size: 12pt;&quot;&gt;PO10      Gerenciar Projetos&lt;o:p&gt;&lt;/o:p&gt;&lt;/span&gt;&lt;/li&gt;
&lt;/ul&gt;&lt;div class=&quot;MsoNormal&quot; style=&quot;line-height: normal; text-align: justify;&quot;&gt;&lt;span style=&quot;font-family: &amp;quot;Times New Roman&amp;quot;,&amp;quot;serif&amp;quot;; font-size: 12pt;&quot;&gt;O procedimento de adquirir e manter a infraestrutura de tecnologia faz parte do domínio &quot;Adquirir e Implementar&quot; do COBIT.&lt;o:p&gt;&lt;/o:p&gt;&lt;/span&gt;&lt;/div&gt;&lt;div class=&quot;MsoNormal&quot; style=&quot;line-height: normal; text-align: justify;&quot;&gt;&lt;br /&gt;
&lt;/div&gt;&lt;div class=&quot;MsoNormal&quot; style=&quot;line-height: normal; text-align: justify;&quot;&gt;&lt;span style=&quot;font-family: &amp;quot;Times New Roman&amp;quot;,&amp;quot;serif&amp;quot;; font-size: 12pt;&quot;&gt;&lt;o:p&gt;&amp;nbsp;&lt;/o:p&gt;&lt;/span&gt;&lt;b&gt;&lt;span style=&quot;font-family: &amp;quot;Times New Roman&amp;quot;,&amp;quot;serif&amp;quot;; font-size: 12pt;&quot;&gt;92 - Resposta: correta &lt;/span&gt;&lt;/b&gt;&lt;span style=&quot;font-family: &amp;quot;Times New Roman&amp;quot;,&amp;quot;serif&amp;quot;; font-size: 12pt;&quot;&gt;&lt;o:p&gt;&lt;/o:p&gt;&lt;/span&gt;&lt;/div&gt;&lt;div class=&quot;MsoNormal&quot; style=&quot;line-height: normal; text-align: justify;&quot;&gt;&lt;span style=&quot;font-family: &amp;quot;Times New Roman&amp;quot;,&amp;quot;serif&amp;quot;; font-size: 12pt;&quot;&gt;&lt;o:p&gt;&lt;/o:p&gt;&lt;/span&gt;&lt;/div&gt;&lt;div class=&quot;MsoNormal&quot; style=&quot;line-height: normal; text-align: justify;&quot;&gt;&lt;span style=&quot;font-family: &amp;quot;Times New Roman&amp;quot;,&amp;quot;serif&amp;quot;; font-size: 12pt;&quot;&gt;COBIT 4.1 p. 7: &quot;A orientação aos negócios do COBIT consiste em objetivos de negócios ligados aos objetivos de TI,&amp;nbsp; provendo métricas e modelos de maturidade para medir a sua eficácia e identificando as responsabilidades relacionadas aos donos dos processos de negócio e de TI&quot;&lt;o:p&gt;&lt;/o:p&gt;&lt;/span&gt;&lt;/div&gt;&lt;div class=&quot;MsoNormal&quot; style=&quot;line-height: normal; text-align: justify;&quot;&gt;&lt;br /&gt;
&lt;/div&gt;&lt;div class=&quot;MsoNormal&quot; style=&quot;line-height: normal; text-align: justify;&quot;&gt;&lt;b&gt;&lt;span style=&quot;font-family: &amp;quot;Times New Roman&amp;quot;,&amp;quot;serif&amp;quot;; font-size: 12pt;&quot;&gt;93 - Resposta: errada&lt;/span&gt;&lt;/b&gt;&lt;span style=&quot;font-family: &amp;quot;Times New Roman&amp;quot;,&amp;quot;serif&amp;quot;; font-size: 12pt;&quot;&gt;&lt;o:p&gt;&lt;/o:p&gt;&lt;/span&gt;&lt;/div&gt;&lt;div class=&quot;MsoNormal&quot; style=&quot;line-height: normal; text-align: justify;&quot;&gt;&lt;b&gt;&lt;span style=&quot;font-family: &amp;quot;Times New Roman&amp;quot;,&amp;quot;serif&amp;quot;; font-size: 12pt;&quot;&gt;&lt;/span&gt;&lt;/b&gt;&lt;span style=&quot;font-family: &amp;quot;Times New Roman&amp;quot;,&amp;quot;serif&amp;quot;; font-size: 12pt;&quot;&gt;&lt;o:p&gt;&lt;/o:p&gt;&lt;/span&gt;&lt;/div&gt;&lt;div class=&quot;MsoNormal&quot; style=&quot;line-height: normal; text-align: justify;&quot;&gt;&lt;span style=&quot;font-family: &amp;quot;Times New Roman&amp;quot;,&amp;quot;serif&amp;quot;; font-size: 12pt;&quot;&gt;O domínio de Aquisição e Implementação do COBIT responde pelos seguintes procedimentos:&lt;o:p&gt;&lt;/o:p&gt;&lt;/span&gt;&lt;/div&gt;&lt;ul type=&quot;disc&quot;&gt;&lt;li class=&quot;MsoNormal&quot; style=&quot;line-height: normal; text-align: justify;&quot;&gt;&lt;span style=&quot;font-family: &amp;quot;Times New Roman&amp;quot;,&amp;quot;serif&amp;quot;; font-size: 12pt;&quot;&gt;AI1      Identificar soluções automatizadas&lt;o:p&gt;&lt;/o:p&gt;&lt;/span&gt;&lt;/li&gt;
&lt;li class=&quot;MsoNormal&quot; style=&quot;line-height: normal; text-align: justify;&quot;&gt;&lt;span style=&quot;font-family: &amp;quot;Times New Roman&amp;quot;,&amp;quot;serif&amp;quot;; font-size: 12pt;&quot;&gt;AI2      Adquirir e manter software aplicativo&lt;o:p&gt;&lt;/o:p&gt;&lt;/span&gt;&lt;/li&gt;
&lt;li class=&quot;MsoNormal&quot; style=&quot;line-height: normal; text-align: justify;&quot;&gt;&lt;span style=&quot;font-family: &amp;quot;Times New Roman&amp;quot;,&amp;quot;serif&amp;quot;; font-size: 12pt;&quot;&gt;AI3      Adquirir e manter infraestrutura de tecnologia&lt;o:p&gt;&lt;/o:p&gt;&lt;/span&gt;&lt;/li&gt;
&lt;li class=&quot;MsoNormal&quot; style=&quot;line-height: normal; text-align: justify;&quot;&gt;&lt;span style=&quot;font-family: &amp;quot;Times New Roman&amp;quot;,&amp;quot;serif&amp;quot;; font-size: 12pt;&quot;&gt;AI4      Habilitar operação e uso&lt;o:p&gt;&lt;/o:p&gt;&lt;/span&gt;&lt;/li&gt;
&lt;li class=&quot;MsoNormal&quot; style=&quot;line-height: normal; text-align: justify;&quot;&gt;&lt;span style=&quot;font-family: &amp;quot;Times New Roman&amp;quot;,&amp;quot;serif&amp;quot;; font-size: 12pt;&quot;&gt;AI5      Adquirir recursos de TI&lt;o:p&gt;&lt;/o:p&gt;&lt;/span&gt;&lt;/li&gt;
&lt;li class=&quot;MsoNormal&quot; style=&quot;line-height: normal; text-align: justify;&quot;&gt;&lt;span style=&quot;font-family: &amp;quot;Times New Roman&amp;quot;,&amp;quot;serif&amp;quot;; font-size: 12pt;&quot;&gt;AI6      Gerenciar mudanças&lt;o:p&gt;&lt;/o:p&gt;&lt;/span&gt;&lt;/li&gt;
&lt;li class=&quot;MsoNormal&quot; style=&quot;line-height: normal; text-align: justify;&quot;&gt;&lt;span style=&quot;font-family: &amp;quot;Times New Roman&amp;quot;,&amp;quot;serif&amp;quot;; font-size: 12pt;&quot;&gt;AI7      Instalar e Homologar soluções e mudanças&lt;o:p&gt;&lt;/o:p&gt;&lt;/span&gt;&lt;/li&gt;
&lt;/ul&gt;&lt;div class=&quot;MsoNormal&quot; style=&quot;line-height: normal; text-align: justify;&quot;&gt;&lt;span style=&quot;font-family: &amp;quot;Times New Roman&amp;quot;,&amp;quot;serif&amp;quot;; font-size: 12pt;&quot;&gt;Gerenciar o desempenho e a capacidade do ambiente de&amp;nbsp; TI&amp;nbsp; fazem parte do domínio &quot;Monitorar e Avaliar&quot; do COBIT.&lt;o:p&gt;&lt;/o:p&gt;&lt;/span&gt;&lt;/div&gt;&lt;div class=&quot;MsoNormal&quot; style=&quot;line-height: normal; text-align: justify;&quot;&gt;&lt;br /&gt;
&lt;/div&gt;&lt;div class=&quot;MsoNormal&quot; style=&quot;line-height: normal; text-align: justify;&quot;&gt;&lt;b&gt;&lt;span style=&quot;font-family: &amp;quot;Times New Roman&amp;quot;,&amp;quot;serif&amp;quot;; font-size: 12pt;&quot;&gt;94 - Resposta: errada&lt;/span&gt;&lt;/b&gt;&lt;span style=&quot;font-family: &amp;quot;Times New Roman&amp;quot;,&amp;quot;serif&amp;quot;; font-size: 12pt;&quot;&gt;&lt;o:p&gt;&lt;/o:p&gt;&lt;/span&gt;&lt;/div&gt;&lt;div class=&quot;MsoNormal&quot; style=&quot;line-height: normal; text-align: justify;&quot;&gt;&lt;b&gt;&lt;span style=&quot;font-family: &amp;quot;Times New Roman&amp;quot;,&amp;quot;serif&amp;quot;; font-size: 12pt;&quot;&gt;&lt;/span&gt;&lt;/b&gt;&lt;span style=&quot;font-family: &amp;quot;Times New Roman&amp;quot;,&amp;quot;serif&amp;quot;; font-size: 12pt;&quot;&gt;&lt;o:p&gt;&lt;/o:p&gt;&lt;/span&gt;&lt;/div&gt;&lt;div class=&quot;MsoNormal&quot; style=&quot;line-height: normal; text-align: justify;&quot;&gt;&lt;span style=&quot;font-family: &amp;quot;Times New Roman&amp;quot;,&amp;quot;serif&amp;quot;; font-size: 12pt;&quot;&gt;Como pode ser visto no comentário da questão anterior, os procedimentos relacionados ao Gerenciamento de mudanças pertencem ao domínio &quot;Adquirir e Implementar&quot;.&amp;nbsp;&lt;b&gt; &lt;/b&gt;&lt;o:p&gt;&lt;/o:p&gt;&lt;/span&gt;&lt;/div&gt;&lt;div class=&quot;MsoNormal&quot; style=&quot;line-height: normal; text-align: justify;&quot;&gt;&lt;br /&gt;
&lt;/div&gt;&amp;nbsp;Referência: COBIT 4.1&lt;b&gt; &lt;/b&gt;  &lt;br /&gt;
&lt;div class=&quot;separator&quot; style=&quot;clear: both; text-align: left;&quot;&gt;&lt;/div&gt;</content><link rel='replies' type='application/atom+xml' href='http://charles-miranda.blogspot.com/feeds/3006046339555536065/comments/default' title='Postar comentários'/><link rel='replies' type='text/html' href='http://charles-miranda.blogspot.com/2010/04/questoes-tre-ba-cobit.html#comment-form' title='0 Comentários'/><link rel='edit' type='application/atom+xml' href='http://www.blogger.com/feeds/8805233244562884169/posts/default/3006046339555536065'/><link rel='self' type='application/atom+xml' href='http://www.blogger.com/feeds/8805233244562884169/posts/default/3006046339555536065'/><link rel='alternate' type='text/html' href='http://charles-miranda.blogspot.com/2010/04/questoes-tre-ba-cobit.html' title='Questões TRE-BA (COBIT)'/><author><name>Charles Miranda</name><uri>http://www.blogger.com/profile/03547869376935064170</uri><email>noreply@blogger.com</email><gd:image rel='http://schemas.google.com/g/2005#thumbnail' width='32' height='26' src='//blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjCSpDLcGXHXwkMSEwiixZKX45eVnJ-pDgmRrp8p59MmEBKElP3mimLz-4QiAJOcT4NHdYCpF798rUQ2Z_VY_BUwfqaVzUgbQWQ1Z8x4Qo_0z-6Yitht6N6Bfk6qsAGsw/s220/imagem.JPG'/></author><media:thumbnail xmlns:media="http://search.yahoo.com/mrss/" url="http://4.bp.blogspot.com/_RFt9qXsT53g/S8Iy1iwBjcI/AAAAAAAAAJ4/Vnxgz6DuL_Y/s72-c/imag.bmp" height="72" width="72"/><thr:total>0</thr:total></entry><entry><id>tag:blogger.com,1999:blog-8805233244562884169.post-4832418836007613013</id><published>2010-04-11T09:00:00.000-07:00</published><updated>2010-04-11T12:42:30.058-07:00</updated><category scheme="http://www.blogger.com/atom/ns#" term="Engenharia de Software"/><title type='text'>Questão do TCU (UML)</title><content type='html'>&lt;div class=&quot;separator&quot; style=&quot;clear: both; font-family: Arial,Helvetica,sans-serif; text-align: justify;&quot;&gt;&lt;span style=&quot;font-size: small;&quot;&gt;&lt;a href=&quot;http://2.bp.blogspot.com/_RFt9qXsT53g/S8HaliB8SYI/AAAAAAAAAJg/4Ni5-vaHW2Q/s1600/imagem.bmp&quot; imageanchor=&quot;1&quot; style=&quot;margin-left: 1em; margin-right: 1em;&quot;&gt;&lt;img border=&quot;0&quot; height=&quot;467&quot; src=&quot;http://2.bp.blogspot.com/_RFt9qXsT53g/S8HaliB8SYI/AAAAAAAAAJg/4Ni5-vaHW2Q/s640/imagem.bmp&quot; width=&quot;640&quot; /&gt;&lt;/a&gt;&lt;/span&gt;&lt;/div&gt;&lt;div style=&quot;font-family: Arial,Helvetica,sans-serif; text-align: justify;&quot;&gt;&lt;span style=&quot;font-size: small;&quot;&gt;&lt;b&gt;108 - Resposta: Errada&lt;/b&gt;&lt;/span&gt;&lt;/div&gt;&lt;div style=&quot;font-family: Arial,Helvetica,sans-serif; text-align: justify;&quot;&gt;&lt;span style=&quot;font-size: small;&quot;&gt;&lt;br /&gt;
&lt;/span&gt;&lt;/div&gt;&lt;div style=&quot;font-family: Arial,Helvetica,sans-serif; text-align: justify;&quot;&gt;&lt;span style=&quot;font-size: small;&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; O método #Cadastrar() da classe instrutor é sim, um método protegido. Entretando, não somente a classe possuidora pode utilizá-lo.&lt;/span&gt;&lt;/div&gt;&lt;div style=&quot;font-family: Arial,Helvetica,sans-serif; text-align: justify;&quot;&gt;&lt;span style=&quot;font-size: small;&quot;&gt;&lt;br /&gt;
&lt;/span&gt;&lt;/div&gt;&lt;div style=&quot;font-family: Arial,Helvetica,sans-serif; text-align: justify;&quot;&gt;&lt;span style=&quot;font-size: small;&quot;&gt;A visibilidade dos métodos é dividida nos seguintes tipos básicos:&lt;/span&gt;&lt;/div&gt;&lt;ul style=&quot;font-family: Arial,Helvetica,sans-serif; text-align: justify;&quot;&gt;&lt;li&gt;&lt;span style=&quot;font-size: small;&quot;&gt; Métodos ou atributos privados ou &lt;b&gt;private&lt;/b&gt; (simbolo &#39; &lt;b&gt;-&lt;/b&gt; &#39;), são privativos da classe que os contém. Nenhuma outra classe pode acessá-los.&lt;/span&gt;&lt;/li&gt;
&lt;li&gt;&lt;span style=&quot;font-size: small;&quot;&gt;Métodos ou atributos públicos ou &lt;b&gt;public&lt;/b&gt; (símbolo &#39; + &#39;), podem ser chamados a partir de métodos localizados em qualquer outra classe.&lt;/span&gt;&lt;/li&gt;
&lt;li&gt;&lt;span style=&quot;font-size: small;&quot;&gt;&lt;span style=&quot;font-family: Arial,Helvetica,sans-serif;&quot;&gt;Métodos ou atributos protegidos ou &lt;/span&gt;&lt;b style=&quot;font-family: Arial,Helvetica,sans-serif;&quot;&gt;protected&lt;/b&gt;&lt;span style=&quot;font-family: Arial,Helvetica,sans-serif;&quot;&gt; (símbolo &#39;#&#39;): Objetos da própria       classe, de classes derivadas desta e de classes do mesmo pacote       têm acesso aos membros protcted.&lt;/span&gt;&lt;/span&gt;&lt;/li&gt;
&lt;li&gt;&lt;span style=&quot;font-size: small;&quot;&gt;&lt;span style=&quot;font-family: Arial,Helvetica,sans-serif;&quot;&gt;Métodos ou atributos com visibilidade de pacote ou &lt;b&gt;package &lt;/b&gt;são como metodos ou atributos public, mas somente dentro do pacote em que sua respectiva classe foi declarada. &lt;/span&gt;&lt;code&gt;&lt;/code&gt;&lt;/span&gt;&lt;/li&gt;
&lt;/ul&gt;&lt;div style=&quot;font-family: Arial,Helvetica,sans-serif; text-align: justify;&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;br /&gt;
&lt;br /&gt;
&lt;span style=&quot;font-size: small;&quot;&gt;&lt;b&gt;109 - Resposta : Correta&lt;/b&gt;&lt;/span&gt;&lt;/div&gt;&lt;div style=&quot;font-family: Arial,Helvetica,sans-serif; text-align: justify;&quot;&gt;&lt;span style=&quot;font-size: small;&quot;&gt;&lt;br /&gt;
&lt;/span&gt;&lt;/div&gt;&lt;div style=&quot;font-family: Arial,Helvetica,sans-serif; text-align: justify;&quot;&gt;&lt;span style=&quot;font-size: small;&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; Esta questão aborda dois conceitos da UML (&lt;i&gt;Unified Modeling Language&lt;/i&gt;), ou seja, o conceito de &lt;b&gt;agregação&lt;/b&gt; e o conceito de multiplicidade de classes.&lt;/span&gt;&lt;/div&gt;&lt;div style=&quot;font-family: Arial,Helvetica,sans-serif; text-align: justify;&quot;&gt;&lt;span style=&quot;font-size: small;&quot;&gt;A &lt;b&gt;agregação &lt;/b&gt;é um tipo de associação conhecida como a relação entre o todo e as partes. Um exemplo possível é a relação &quot;Empresa tem empregados&quot;, onde empresa é o todo e empregados são as partes.&lt;/span&gt;&lt;/div&gt;&lt;div style=&quot;font-family: Arial,Helvetica,sans-serif; text-align: justify;&quot;&gt;&lt;span style=&quot;font-size: small;&quot;&gt;&amp;nbsp;&amp;nbsp; &amp;nbsp; Duas observações podem ser destacadas com relação ao conceito de agregação:&lt;/span&gt;&lt;/div&gt;&lt;ol style=&quot;font-family: Arial,Helvetica,sans-serif; text-align: justify;&quot;&gt;&lt;li&gt;&lt;span style=&quot;font-size: small;&quot;&gt;&amp;nbsp;As agregações são &lt;b&gt;assimétricas&lt;/b&gt;, no sentido de que, se um objeto A, é parte de um objeto B, o objeto B não pode ser parte do objeto A.&lt;/span&gt;&lt;/li&gt;
&lt;li&gt;&lt;span style=&quot;font-size: small;&quot;&gt;Um comportamento que se aplica a um todo, automaticamente se aplica também às suas partes. &lt;/span&gt;&lt;/li&gt;
&lt;/ol&gt;&lt;div style=&quot;font-family: Arial,Helvetica,sans-serif; text-align: justify;&quot;&gt;&lt;span style=&quot;font-size: small;&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; Este tipo de associação é dividido em dois tipos básicos:&lt;/span&gt;&lt;/div&gt;&lt;ul style=&quot;font-family: Arial,Helvetica,sans-serif; text-align: justify;&quot;&gt;&lt;li&gt; &lt;span style=&quot;font-size: small;&quot;&gt;&lt;b&gt;Agregação, &lt;/b&gt;propriamente dita: Os objetos que fazem parte do &quot;todo&quot; são criados e destruídos independentemente deste último. Além disto o objeto &quot;parte&quot; pode ser usado para compor diversos objetos &quot;todo&quot;.&lt;/span&gt;&lt;/li&gt;
&lt;li&gt; &lt;span style=&quot;font-size: small;&quot;&gt;&lt;b&gt;Agregação composta&lt;/b&gt;, ou &lt;b&gt;composição: &lt;/b&gt;Os objetos &quot;parte&quot; pertencem a um único &quot;todo&quot;. Além disto, os objetos &quot;parte&quot; são sempre criados e destruídos pelo objeto todo. Se o todo deixa de existir, o mesmo acontece com suas partes.&lt;/span&gt;&lt;/li&gt;
&lt;/ul&gt;&lt;div style=&quot;font-family: Arial,Helvetica,sans-serif; text-align: justify;&quot;&gt;&lt;span style=&quot;font-size: small;&quot;&gt;&amp;nbsp; &amp;nbsp; &amp;nbsp;&amp;nbsp; Um exemplo do relacionamento de agregação composta pode ser visto na imagem abaixo, que diz que um determinado departamento pertence a uma única empresa . Caso um objeto da classe Empresa deixe de existir, os objetos Departamento associados a ele também deixarão de existir.&lt;/span&gt;&lt;/div&gt;&lt;div style=&quot;font-family: Arial,Helvetica,sans-serif; text-align: justify;&quot;&gt;&lt;span style=&quot;font-size: small;&quot;&gt;&lt;br /&gt;
&lt;/span&gt;&lt;/div&gt;&lt;div class=&quot;separator&quot; style=&quot;clear: both; font-family: Arial,Helvetica,sans-serif; text-align: justify;&quot;&gt;&lt;span style=&quot;font-size: small;&quot;&gt;&lt;a href=&quot;http://3.bp.blogspot.com/_RFt9qXsT53g/S8HqDtq5cBI/AAAAAAAAAJo/i0Z1NhqBEy8/s1600/imagem.PNG&quot; imageanchor=&quot;1&quot; style=&quot;margin-left: 1em; margin-right: 1em;&quot;&gt;&lt;img border=&quot;0&quot; height=&quot;110&quot; src=&quot;http://3.bp.blogspot.com/_RFt9qXsT53g/S8HqDtq5cBI/AAAAAAAAAJo/i0Z1NhqBEy8/s400/imagem.PNG&quot; width=&quot;400&quot; /&gt;&lt;/a&gt;&lt;/span&gt;&lt;/div&gt;&lt;div style=&quot;font-family: Arial,Helvetica,sans-serif; text-align: justify;&quot;&gt;&lt;span style=&quot;font-size: small;&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;/span&gt;&lt;/div&gt;&lt;div style=&quot;font-family: Arial,Helvetica,sans-serif; text-align: justify;&quot;&gt;&lt;span style=&quot;font-size: small;&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; O outro conceito abordado é o de &lt;b&gt;multiplicidade de classes&lt;/b&gt;, que indica, em cada associação, a quantidade de participantes de cada classe.&lt;/span&gt;&lt;/div&gt;&lt;div style=&quot;font-family: Arial,Helvetica,sans-serif; text-align: justify;&quot;&gt;&lt;span style=&quot;font-size: small;&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; A multiplicidade de uma classe pode ser representada das seguintes formas:&lt;/span&gt;&lt;/div&gt;&lt;ul style=&quot;font-family: Arial,Helvetica,sans-serif; text-align: justify;&quot;&gt;&lt;li&gt;&lt;span style=&quot;font-size: small;&quot;&gt;Através de um asterisco (*), indicando&amp;nbsp; &lt;b&gt;um ou muitos;&lt;/b&gt;&lt;/span&gt;&lt;/li&gt;
&lt;li&gt;&lt;span style=&quot;font-size: small;&quot;&gt;Através de um valor fixo, como 3;&lt;/span&gt;&lt;/li&gt;
&lt;li&gt;&lt;span style=&quot;font-size: small;&quot;&gt;Através de um intervalo, como 1..3, da questão, indicando o valor mínimo e máximo, respectivamente, de participantes da associação;&lt;/span&gt;&lt;/li&gt;
&lt;li&gt;&lt;span style=&quot;font-size: small;&quot;&gt;Através de um conjunto de valores, como [1,3,4,7].&lt;/span&gt;&lt;/li&gt;
&lt;/ul&gt;&lt;div style=&quot;font-family: Arial,Helvetica,sans-serif; text-align: justify;&quot;&gt;&lt;span style=&quot;font-size: small;&quot;&gt;&lt;br /&gt;
&lt;/span&gt;&lt;/div&gt;&lt;div style=&quot;font-family: Arial,Helvetica,sans-serif; text-align: justify;&quot;&gt;&lt;span style=&quot;font-size: small;&quot;&gt;&lt;br /&gt;
&lt;/span&gt;&lt;/div&gt;&lt;div style=&quot;font-family: Arial,Helvetica,sans-serif; text-align: justify;&quot;&gt;&lt;span style=&quot;font-size: small;&quot;&gt;&amp;nbsp;Referêncas:&amp;nbsp; Uml, metodologias e Ferramentas CASE&lt;/span&gt;&lt;/div&gt;&lt;div style=&quot;font-family: Arial,Helvetica,sans-serif; text-align: justify;&quot;&gt;&lt;span style=&quot;font-size: small;&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; &amp;nbsp; UML, Eduardo Bezerra &lt;/span&gt;&lt;/div&gt;&lt;div style=&quot;font-family: Arial,Helvetica,sans-serif; text-align: justify;&quot;&gt;&lt;span style=&quot;font-size: small;&quot;&gt;&lt;br /&gt;
&lt;/span&gt;&lt;/div&gt;</content><link rel='replies' type='application/atom+xml' href='http://charles-miranda.blogspot.com/feeds/4832418836007613013/comments/default' title='Postar comentários'/><link rel='replies' type='text/html' href='http://charles-miranda.blogspot.com/2010/04/questao-do-tcu-uml_11.html#comment-form' title='0 Comentários'/><link rel='edit' type='application/atom+xml' href='http://www.blogger.com/feeds/8805233244562884169/posts/default/4832418836007613013'/><link rel='self' type='application/atom+xml' href='http://www.blogger.com/feeds/8805233244562884169/posts/default/4832418836007613013'/><link rel='alternate' type='text/html' href='http://charles-miranda.blogspot.com/2010/04/questao-do-tcu-uml_11.html' title='Questão do TCU (UML)'/><author><name>Charles Miranda</name><uri>http://www.blogger.com/profile/03547869376935064170</uri><email>noreply@blogger.com</email><gd:image rel='http://schemas.google.com/g/2005#thumbnail' width='32' height='26' src='//blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjCSpDLcGXHXwkMSEwiixZKX45eVnJ-pDgmRrp8p59MmEBKElP3mimLz-4QiAJOcT4NHdYCpF798rUQ2Z_VY_BUwfqaVzUgbQWQ1Z8x4Qo_0z-6Yitht6N6Bfk6qsAGsw/s220/imagem.JPG'/></author><media:thumbnail xmlns:media="http://search.yahoo.com/mrss/" url="http://2.bp.blogspot.com/_RFt9qXsT53g/S8HaliB8SYI/AAAAAAAAAJg/4Ni5-vaHW2Q/s72-c/imagem.bmp" height="72" width="72"/><thr:total>0</thr:total></entry><entry><id>tag:blogger.com,1999:blog-8805233244562884169.post-8196821541978140585</id><published>2010-04-10T19:26:00.000-07:00</published><updated>2010-04-10T19:43:51.947-07:00</updated><category scheme="http://www.blogger.com/atom/ns#" term="Redes de Computadores"/><title type='text'>Questão CAPES Analista de Sistemas</title><content type='html'>&lt;div class=&quot;separator&quot; style=&quot;clear: both; text-align: center;&quot;&gt;&lt;/div&gt;&lt;div class=&quot;separator&quot; style=&quot;clear: both; text-align: center;&quot;&gt;&lt;a href=&quot;http://3.bp.blogspot.com/_RFt9qXsT53g/S8EyuYZah5I/AAAAAAAAAJY/WIdH1z-YEw4/s1600/imagem.bmp&quot; imageanchor=&quot;1&quot; style=&quot;margin-left: 1em; margin-right: 1em;&quot;&gt;&lt;img border=&quot;0&quot; height=&quot;240&quot; src=&quot;http://3.bp.blogspot.com/_RFt9qXsT53g/S8EyuYZah5I/AAAAAAAAAJY/WIdH1z-YEw4/s400/imagem.bmp&quot; width=&quot;400&quot; /&gt;&lt;/a&gt;&lt;/div&gt;Resposta: Alternativa &lt;b&gt;b&lt;/b&gt;&lt;br /&gt;
&lt;br /&gt;
/29, em endereçamento IP, é o mesmo que: &lt;br /&gt;
11111111.11111111.11111111.11111000 &lt;br /&gt;
ou  &lt;br /&gt;
255.255.255.248  &lt;br /&gt;
Sabe-se que bits &#39;1&#39; identificam as sub-redes e bits &#39;0&#39; identificam  os hosts e que, o primeiro IP e o último IP da sub-rede não são válidos  para identificar hosts, pois o primeiro é o identifidor da sub-rede e o  último para broadcast.&lt;br /&gt;
a faixa de endereçamento fornecida no enunciado permite a formação de  sub-redes com até 2^3 hosts (três bits &#39;0&#39;) , ou seja,  &lt;br /&gt;
1º sub-rede: 192.168.1.0  -&amp;gt; 192.168.1.7 &lt;br /&gt;
2º sub-rede: 192.168.1.8  -&amp;gt; 192.168.1.15 &lt;br /&gt;
3º sub-rede: 192.168.1.16 -&amp;gt; 192.168.1.23&lt;br /&gt;
.&lt;br /&gt;
&lt;br /&gt;
.&lt;br /&gt;
&lt;br /&gt;
.&lt;br /&gt;
e assim por diante&lt;br /&gt;
os IPs apresentados no enunciado pertencem à 3º sub-rede e, como o  primeiro e o último&amp;nbsp; IPs, não servem para identificar hosts, restam quatro IPs  disponíveis, ou seja,&lt;br /&gt;
192.168.1.17 &lt;br /&gt;
192.168.1.18 &lt;br /&gt;
192.168.1.19 &lt;br /&gt;
192.168.1.20</content><link rel='replies' type='application/atom+xml' href='http://charles-miranda.blogspot.com/feeds/8196821541978140585/comments/default' title='Postar comentários'/><link rel='replies' type='text/html' href='http://charles-miranda.blogspot.com/2010/04/questao-capes-analista-de-sistemas.html#comment-form' title='0 Comentários'/><link rel='edit' type='application/atom+xml' href='http://www.blogger.com/feeds/8805233244562884169/posts/default/8196821541978140585'/><link rel='self' type='application/atom+xml' href='http://www.blogger.com/feeds/8805233244562884169/posts/default/8196821541978140585'/><link rel='alternate' type='text/html' href='http://charles-miranda.blogspot.com/2010/04/questao-capes-analista-de-sistemas.html' title='Questão CAPES Analista de Sistemas'/><author><name>Charles Miranda</name><uri>http://www.blogger.com/profile/03547869376935064170</uri><email>noreply@blogger.com</email><gd:image rel='http://schemas.google.com/g/2005#thumbnail' width='32' height='26' src='//blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjCSpDLcGXHXwkMSEwiixZKX45eVnJ-pDgmRrp8p59MmEBKElP3mimLz-4QiAJOcT4NHdYCpF798rUQ2Z_VY_BUwfqaVzUgbQWQ1Z8x4Qo_0z-6Yitht6N6Bfk6qsAGsw/s220/imagem.JPG'/></author><media:thumbnail xmlns:media="http://search.yahoo.com/mrss/" url="http://3.bp.blogspot.com/_RFt9qXsT53g/S8EyuYZah5I/AAAAAAAAAJY/WIdH1z-YEw4/s72-c/imagem.bmp" height="72" width="72"/><thr:total>0</thr:total></entry><entry><id>tag:blogger.com,1999:blog-8805233244562884169.post-6087279931566563558</id><published>2010-04-10T19:10:00.000-07:00</published><updated>2010-04-10T20:19:29.420-07:00</updated><category scheme="http://www.blogger.com/atom/ns#" term="Segurança da Informação"/><title type='text'>Questão - Perito Criminal Federal, Computação Científica</title><content type='html'>&lt;div class=&quot;separator&quot; style=&quot;clear: both; font-family: Arial,Helvetica,sans-serif; text-align: justify;&quot;&gt;&lt;/div&gt;&lt;div class=&quot;separator&quot; style=&quot;clear: both; font-family: Arial,Helvetica,sans-serif; text-align: justify;&quot;&gt;&lt;/div&gt;&lt;div class=&quot;separator&quot; style=&quot;clear: both; font-family: Arial,Helvetica,sans-serif; text-align: justify;&quot;&gt;&lt;a href=&quot;http://4.bp.blogspot.com/_RFt9qXsT53g/S8Esi7h5ubI/AAAAAAAAAJQ/H1PWwGR5WY8/s1600/imagem.bmp&quot; imageanchor=&quot;1&quot; style=&quot;margin-left: 1em; margin-right: 1em;&quot;&gt;&lt;img border=&quot;0&quot; height=&quot;208&quot; src=&quot;http://4.bp.blogspot.com/_RFt9qXsT53g/S8Esi7h5ubI/AAAAAAAAAJQ/H1PWwGR5WY8/s400/imagem.bmp&quot; width=&quot;400&quot; /&gt;&lt;/a&gt;&lt;/div&gt;&lt;div style=&quot;font-family: Arial,Helvetica,sans-serif; text-align: justify;&quot;&gt;&lt;b&gt;Resposta: Correta&lt;/b&gt;&lt;/div&gt;&lt;div style=&quot;font-family: Arial,Helvetica,sans-serif; text-align: justify;&quot;&gt;&lt;br /&gt;
&lt;/div&gt;&lt;div style=&quot;font-family: Arial,Helvetica,sans-serif; text-align: justify;&quot;&gt;O &lt;b&gt;sistema criptográfico de chave única&lt;/b&gt;, ou &lt;b&gt;cifra de uso único&lt;/b&gt;, faz a conversão de um texto simples em uma string de bits. A encriptação deste texto simples é feita utilizando, como chave, uma string de bits aleatórios. Para a encriptação é calculado o XOR (OR exclusivo) das duas strings. &lt;/div&gt;&lt;div style=&quot;font-family: Arial,Helvetica,sans-serif; text-align: justify;&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp; Este método é imune a todos os ataques presentes e futuros, independentemente da capacidade computacional do intruso. Isto porque, simplesmente não existe nenhuma informação na mensagem encriptada. Todos os textos simples possíveis com o tamanho dado são igualmente prováveis.&lt;/div&gt;&lt;div style=&quot;font-family: Arial,Helvetica,sans-serif; text-align: justify;&quot;&gt;&amp;nbsp;&amp;nbsp; Algumas desvantagens do método de chave de uso único (&lt;b&gt;one-time-pad&lt;/b&gt;) podem ser destacadas. Primeiramente, a chave não pode ser memorizada. Em segundo lugar, o tamanho da chave limita a quantidade de dados que podem ser transmitidos.&lt;/div&gt;&lt;div style=&quot;font-family: Arial,Helvetica,sans-serif; text-align: justify;&quot;&gt;&lt;br /&gt;
&lt;/div&gt;&lt;div style=&quot;font-family: Arial,Helvetica,sans-serif; text-align: justify;&quot;&gt;Referência: Redes de Computadores, Tanembaum (p. 777 e 778)&lt;/div&gt;&lt;div style=&quot;font-family: Arial,Helvetica,sans-serif; text-align: justify;&quot;&gt;&lt;br /&gt;
&lt;/div&gt;&lt;div style=&quot;font-family: Arial,Helvetica,sans-serif; text-align: justify;&quot;&gt;&lt;br /&gt;
&lt;/div&gt;</content><link rel='replies' type='application/atom+xml' href='http://charles-miranda.blogspot.com/feeds/6087279931566563558/comments/default' title='Postar comentários'/><link rel='replies' type='text/html' href='http://charles-miranda.blogspot.com/2010/04/questao-perito-criminal-federal.html#comment-form' title='0 Comentários'/><link rel='edit' type='application/atom+xml' href='http://www.blogger.com/feeds/8805233244562884169/posts/default/6087279931566563558'/><link rel='self' type='application/atom+xml' href='http://www.blogger.com/feeds/8805233244562884169/posts/default/6087279931566563558'/><link rel='alternate' type='text/html' href='http://charles-miranda.blogspot.com/2010/04/questao-perito-criminal-federal.html' title='Questão - Perito Criminal Federal, Computação Científica'/><author><name>Charles Miranda</name><uri>http://www.blogger.com/profile/03547869376935064170</uri><email>noreply@blogger.com</email><gd:image rel='http://schemas.google.com/g/2005#thumbnail' width='32' height='26' src='//blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjCSpDLcGXHXwkMSEwiixZKX45eVnJ-pDgmRrp8p59MmEBKElP3mimLz-4QiAJOcT4NHdYCpF798rUQ2Z_VY_BUwfqaVzUgbQWQ1Z8x4Qo_0z-6Yitht6N6Bfk6qsAGsw/s220/imagem.JPG'/></author><media:thumbnail xmlns:media="http://search.yahoo.com/mrss/" url="http://4.bp.blogspot.com/_RFt9qXsT53g/S8Esi7h5ubI/AAAAAAAAAJQ/H1PWwGR5WY8/s72-c/imagem.bmp" height="72" width="72"/><thr:total>0</thr:total></entry><entry><id>tag:blogger.com,1999:blog-8805233244562884169.post-1744639788063292184</id><published>2010-04-10T13:43:00.000-07:00</published><updated>2010-04-10T19:54:26.194-07:00</updated><category scheme="http://www.blogger.com/atom/ns#" term="Engenharia de Software"/><title type='text'>Questão do TCU (UML)</title><content type='html'>&lt;div class=&quot;separator&quot; style=&quot;clear: both; text-align: center;&quot;&gt;&lt;a href=&quot;http://3.bp.blogspot.com/_RFt9qXsT53g/S8Dis6tVwjI/AAAAAAAAAJI/8xehUCcOWaU/s1600/imagem.bmp&quot; imageanchor=&quot;1&quot; style=&quot;margin-left: 1em; margin-right: 1em;&quot;&gt;&lt;img border=&quot;0&quot; height=&quot;400&quot; src=&quot;http://3.bp.blogspot.com/_RFt9qXsT53g/S8Dis6tVwjI/AAAAAAAAAJI/8xehUCcOWaU/s400/imagem.bmp&quot; width=&quot;335&quot; /&gt;&lt;meta content=&quot;text/html; charset=utf-8&quot; http-equiv=&quot;Content-Type&quot;&gt;&lt;/meta&gt;&lt;meta content=&quot;Word.Document&quot; name=&quot;ProgId&quot;&gt;&lt;/meta&gt;&lt;meta content=&quot;Microsoft Word 12&quot; name=&quot;Generator&quot;&gt;&lt;/meta&gt;&lt;meta content=&quot;Microsoft Word 12&quot; name=&quot;Originator&quot;&gt;&lt;/meta&gt;&lt;link href=&quot;file:///C:%5CDOCUME%7E1%5CCharles%5CCONFIG%7E1%5CTemp%5Cmsohtmlclip1%5C01%5Cclip_filelist.xml&quot; rel=&quot;File-List&quot;&gt;&lt;/link&gt;&lt;link href=&quot;file:///C:%5CDOCUME%7E1%5CCharles%5CCONFIG%7E1%5CTemp%5Cmsohtmlclip1%5C01%5Cclip_themedata.thmx&quot; rel=&quot;themeData&quot;&gt;&lt;/link&gt;&lt;link href=&quot;file:///C:%5CDOCUME%7E1%5CCharles%5CCONFIG%7E1%5CTemp%5Cmsohtmlclip1%5C01%5Cclip_colorschememapping.xml&quot; rel=&quot;colorSchemeMapping&quot;&gt;&lt;/link&gt;&lt;style&gt;
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&lt;div class=&quot;MsoNormal&quot; style=&quot;font-family: Arial,Helvetica,sans-serif; text-align: justify;&quot;&gt;&lt;span style=&quot;font-size: small;&quot;&gt;&lt;b&gt;Resposta: Correta&lt;/b&gt;&lt;o:p&gt;&lt;/o:p&gt;&lt;/span&gt;&lt;/div&gt;&lt;div class=&quot;MsoNormal&quot; style=&quot;font-family: Arial,Helvetica,sans-serif; line-height: normal; text-align: justify;&quot;&gt;&lt;span style=&quot;font-size: small;&quot;&gt;Vê-se através do diagrama que os atores professor e supervisor são ligados pelos conceitos de generalização/especialização, sendo que o ator &lt;b&gt;supervisor &lt;/b&gt;é uma especialização do ator &lt;b&gt;professor&lt;/b&gt;, sendo assim, o ator &lt;b&gt;supervisor&lt;/b&gt; possui todas as propriedades do ator &lt;b&gt;professor&lt;/b&gt;, inclusive suas associações com os casos de uso&lt;/span&gt;&lt;/div&gt;&lt;div class=&quot;MsoNormal&quot; style=&quot;font-family: Arial,Helvetica,sans-serif; line-height: normal; text-align: justify;&quot;&gt;&lt;span style=&quot;font-size: small;&quot;&gt;Além disto, quanto à abstração dos casos de uso, o grau de abstração de um caso de uso diz respeito à existência ou não de menção à tecnologia utilizada na descrição desse caso de uso.&lt;/span&gt;&lt;br /&gt;
&lt;span style=&quot;font-size: small;&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; Quanto à abstração, um caso de uso pode ser:&lt;/span&gt;&lt;/div&gt;&lt;div class=&quot;MsoNormal&quot; style=&quot;font-family: Arial,Helvetica,sans-serif; line-height: normal; margin-bottom: 0.0001pt; text-align: justify;&quot;&gt;&lt;ul&gt;&lt;li&gt;&lt;span style=&quot;font-size: small;&quot;&gt;&lt;b&gt;Essencial: &lt;/b&gt;É abstrato e não faz menção à tecnologia a ser utilizada.&lt;/span&gt;&lt;/li&gt;
&lt;/ul&gt;&lt;/div&gt;&lt;div class=&quot;MsoNormal&quot; style=&quot;font-family: Arial,Helvetica,sans-serif; line-height: normal; margin-bottom: 0.0001pt; text-align: justify;&quot;&gt;&lt;ul&gt;&lt;li&gt;&lt;span style=&quot;font-size: small;&quot;&gt;&lt;b&gt;Real: &lt;/b&gt;As descrições das interações citam detalhes da tecnologia a ser utilizada na implementação do caso de uso.&lt;/span&gt;&lt;/li&gt;
&lt;/ul&gt;&lt;/div&gt;&lt;div class=&quot;MsoNormal&quot; style=&quot;font-family: Arial,Helvetica,sans-serif; line-height: normal; margin-bottom: 0.0001pt; text-align: justify;&quot;&gt;&lt;span style=&quot;font-size: small;&quot;&gt;Com isto, vê-se que todos os casos de uso representados no diagrama são &lt;b&gt;abstratos&lt;/b&gt; ou &lt;b&gt;essenciais.&lt;/b&gt;&lt;/span&gt;&lt;/div&gt;&lt;div class=&quot;MsoNormal&quot; style=&quot;font-family: Arial,Helvetica,sans-serif; line-height: normal; margin-bottom: 0.0001pt; text-align: justify;&quot;&gt;&lt;span style=&quot;font-size: small;&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; Uma forma de verificar se um caso de uso é abstrato ou não é através da utilização da “regra dos cem anos”. Ao ler a narrativa de um caso de uso pergunte se a narrativa seria válida tanto há cem anos quando daqui a cem anos. Caso a resposta seja &lt;b&gt;sim&lt;/b&gt;, tem-se um caso de uso abstrato ou &lt;b&gt;essencial&lt;/b&gt;, caso contrário, tem-se um caso de uso &lt;b&gt;real.&lt;/b&gt;&lt;/span&gt;&lt;/div&gt;&lt;div style=&quot;font-family: Arial,Helvetica,sans-serif;&quot;&gt;&lt;span style=&quot;font-size: small;&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; A última afirmativa da questão refere-se aos conceitos relativos aos relacionamentos de &lt;b&gt;extensão.&lt;/b&gt;&lt;/span&gt;&lt;/div&gt;&lt;div class=&quot;MsoNormal&quot; style=&quot;line-height: normal; margin-bottom: 0.0001pt; text-align: justify;&quot;&gt;&lt;span style=&quot;font-family: &amp;quot;Times New Roman&amp;quot;,&amp;quot;serif&amp;quot;;&quot;&gt;&lt;span style=&quot;font-family: Times,&amp;quot;Times New Roman&amp;quot;,serif; font-size: small;&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;span style=&quot;font-family: Arial,Helvetica,sans-serif;&quot;&gt;No caso do digrama, temos um caso de uso extensor (&lt;/span&gt;&lt;/span&gt;&lt;span style=&quot;font-family: Times,&amp;quot;Times New Roman&amp;quot;,serif; font-size: small;&quot;&gt;&lt;i&gt;incluir conteúdo programático)&lt;b&gt; &lt;/b&gt;&lt;/i&gt;&lt;/span&gt;&lt;span style=&quot;font-family: Times,&amp;quot;Times New Roman&amp;quot;,serif; font-size: small;&quot;&gt;e um caso de uso estendido (&lt;/span&gt;&lt;span style=&quot;font-family: Times,&amp;quot;Times New Roman&amp;quot;,serif; font-size: small;&quot;&gt;&lt;i&gt;incluir notas&lt;/i&gt;&lt;/span&gt;&lt;span style=&quot;font-family: Times,&amp;quot;Times New Roman&amp;quot;,serif; font-size: small;&quot;&gt;&lt;span style=&quot;font-family: Arial,Helvetica,sans-serif;&quot;&gt;). A seta que liga extensor e estendido parte do extensor para o estendido. Um caso de uso extensor representa um comportamento opcional, ou seja, um comportamento que só ocorre sob certas condições, ou cuja realização depende da escolha de um ator. Quando um ator opta por executar a sequência de interações definida no extensor, este é executado. Após a sua execução, o fluxo de interações volta ao caso de uso estendido, recomeçando logo após o ponto em que o extensor foi inserido&lt;/span&gt;.&lt;/span&gt;&lt;/span&gt;&lt;br /&gt;
&lt;br /&gt;
&lt;span style=&quot;font-family: &amp;quot;Times New Roman&amp;quot;,&amp;quot;serif&amp;quot;;&quot;&gt;&lt;span style=&quot;font-family: Times,&amp;quot;Times New Roman&amp;quot;,serif; font-size: small;&quot;&gt;Referência: UML, Eduardo Bezerra&amp;nbsp; &lt;/span&gt;&lt;i&gt;&lt;o:p&gt;&lt;/o:p&gt;&lt;/i&gt;&lt;/span&gt;&lt;/div&gt;</content><link rel='replies' type='application/atom+xml' href='http://charles-miranda.blogspot.com/feeds/1744639788063292184/comments/default' title='Postar comentários'/><link rel='replies' type='text/html' href='http://charles-miranda.blogspot.com/2010/04/questao-do-tcu-uml.html#comment-form' title='0 Comentários'/><link rel='edit' type='application/atom+xml' href='http://www.blogger.com/feeds/8805233244562884169/posts/default/1744639788063292184'/><link rel='self' type='application/atom+xml' href='http://www.blogger.com/feeds/8805233244562884169/posts/default/1744639788063292184'/><link rel='alternate' type='text/html' href='http://charles-miranda.blogspot.com/2010/04/questao-do-tcu-uml.html' title='Questão do TCU (UML)'/><author><name>Charles Miranda</name><uri>http://www.blogger.com/profile/03547869376935064170</uri><email>noreply@blogger.com</email><gd:image rel='http://schemas.google.com/g/2005#thumbnail' width='32' height='26' src='//blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjCSpDLcGXHXwkMSEwiixZKX45eVnJ-pDgmRrp8p59MmEBKElP3mimLz-4QiAJOcT4NHdYCpF798rUQ2Z_VY_BUwfqaVzUgbQWQ1Z8x4Qo_0z-6Yitht6N6Bfk6qsAGsw/s220/imagem.JPG'/></author><media:thumbnail xmlns:media="http://search.yahoo.com/mrss/" url="http://3.bp.blogspot.com/_RFt9qXsT53g/S8Dis6tVwjI/AAAAAAAAAJI/8xehUCcOWaU/s72-c/imagem.bmp" height="72" width="72"/><thr:total>0</thr:total></entry><entry><id>tag:blogger.com,1999:blog-8805233244562884169.post-2721292554187849232</id><published>2010-04-10T13:34:00.000-07:00</published><updated>2010-04-10T19:57:50.394-07:00</updated><category scheme="http://www.blogger.com/atom/ns#" term="Engenharia de Software"/><title type='text'>Questão do TCU (RUP)</title><content type='html'>&lt;div class=&quot;separator&quot; style=&quot;clear: both; text-align: center;&quot;&gt;&lt;/div&gt;&lt;div class=&quot;separator&quot; style=&quot;clear: both; text-align: center;&quot;&gt;&lt;/div&gt;&lt;div class=&quot;separator&quot; style=&quot;clear: both; text-align: center;&quot;&gt;&lt;/div&gt;&lt;div class=&quot;separator&quot; style=&quot;clear: both; text-align: center;&quot;&gt;&lt;/div&gt;&lt;div class=&quot;separator&quot; style=&quot;clear: both; text-align: center;&quot;&gt;&lt;/div&gt;&lt;div class=&quot;separator&quot; style=&quot;clear: both; text-align: center;&quot;&gt;&lt;/div&gt;&lt;div class=&quot;separator&quot; style=&quot;clear: both; text-align: center;&quot;&gt;&lt;/div&gt;&lt;div class=&quot;separator&quot; style=&quot;clear: both; text-align: center;&quot;&gt;&lt;a href=&quot;http://2.bp.blogspot.com/_RFt9qXsT53g/S8DfF0qYm4I/AAAAAAAAAJA/4pi5vUuAoI8/s1600/imagem.bmp&quot; imageanchor=&quot;1&quot; style=&quot;margin-left: 1em; margin-right: 1em;&quot;&gt;&lt;img border=&quot;0&quot; height=&quot;231&quot; src=&quot;http://2.bp.blogspot.com/_RFt9qXsT53g/S8DfF0qYm4I/AAAAAAAAAJA/4pi5vUuAoI8/s400/imagem.bmp&quot; width=&quot;400&quot; /&gt;&lt;/a&gt;&lt;/div&gt;&lt;br /&gt;
&lt;br /&gt;
&lt;div style=&quot;text-align: justify;&quot;&gt;&lt;b&gt;Resposta: Errada&lt;/b&gt;&lt;/div&gt;&lt;div style=&quot;text-align: justify;&quot;&gt;&lt;/div&gt;&lt;div style=&quot;text-align: justify;&quot;&gt;Nesta questão quase todas as afirmativas estão corretas, ou seja, é verdade que a criação de baselines no RUP tem como motivação a rastreabilidade, a elaboração de relatórios e a produtibilidade. Também é verdadeiro que com baselines é possível desfazer mudanças caso as atualizações realizadas sejam consideradas instáveis ou não confiáveis. O erro da questão está na afirmativa do meio, que diz que na fase de construção é possível estabelecer um marco da arquitetura do ciclo de vida do projeto. Esta afirmação seria correta se dissesse que &quot;na fase de &lt;b&gt;elaboração&lt;/b&gt; é possível estabelecer um marco do ciclo de vida do projeto&quot;&lt;/div&gt;&lt;br /&gt;
- Marco dos Objetivos do Ciclo de Vida (Fase de iniciação)&lt;br /&gt;
- Marco da Arquitetura do Ciclo de Vida (Fase de Elaboração)&lt;br /&gt;
- Marco da Capacidade Operacional Inicial (Fase de Construção)&lt;br /&gt;
- Marco de Release do Produto (Fase de Transição)&lt;br /&gt;
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